Candida or Pseudomonas are these microbes do not have well-developed virulence factors. pathogens, meaning they are not usually pathogenic to healthy persons with normal immune system functions because Multiple Cholce: A) virulent B) temperate C) true D)opportunistic
Answers
Candida and Pseudomonas are both opportunistic pathogens, meaning they are not usually pathogenic to healthy persons with normal immune system functions. However, in certain conditions, such as when the immune system is weakened, these microbes can cause disease. Thus, option D is the correct answer.
Pathogens are microorganisms that can cause illness or disease in humans, animals, or plants. These organisms can spread from one host to another and cause infections. Pathogens can be bacteria, viruses, fungi, or parasites.
Pseudomonas is a genus of gram-negative bacteria that are naturally found in soil, water, and plants. They are opportunistic pathogens that may cause a range of diseases in humans, plants, and animals.
Candida is a type of fungus that naturally occurs in the human body. It usually doesn't cause any harm but can cause infections in individuals with a weakened immune system. Candida infections can affect the skin, mouth, throat, or genitals.
Candida and Pseudomonas are not usually pathogenic to healthy persons with normal immune system functions because they do not have well-developed virulence factors, which may include toxins, adhesins, or capsules that help the pathogens evade the host's immune system.
Since Candida and Pseudomonas do not produce these virulence factors, they are not usually pathogenic to healthy individuals. Thus, they are opportunistic pathogens. So, option D is correct.
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Select the correct locations in the images.
Among pea plants, we see more peas with smooth pods than with constricted pods. If a plant with constricted pods is mated with a plant with smooth pods, the offspring have smooth pods. When the offspring mature, and two of them are mated, they have a 25 percent chance of producing offspring with constricted pods. Identify the offspring with homozygous alleles for the smooth pod trait.
Answers
Based on the information you provided, I can explain the concept of homozygous alleles for the smooth pod trait.
In the given scenario, if a plant with constricted pods (which is likely heterozygous for the trait) is mated with a plant with smooth pods (which is likely homozygous for the trait), the resulting offspring with smooth pods would be heterozygous for the trait.
Homozygous alleles refer to having two identical alleles for a particular gene. In this case, if the offspring with smooth pods from the initial mating are mated with each other, there is a 25 percent chance that they will produce offspring with constricted pods. This suggests that the parents must have carried a recessive allele for the constricted pod trait.
To identify the offspring with homozygous alleles for the smooth pod trait, you would need additional information or data on the genetic makeup or genotypes of the specific plants involved in the mating process.
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The plants that have homozygous alleles for the smooth pod trait are those identified with SS.
How to identify the plants with homozygous alleles for the smooth pod trait?To begin, if there are homozygous alleles, this implies the alleles are identical, which means the letters representing the alleles would be identical as well.
Moreover, the allele for the smooth pod trait is a dominant allele as this is the allele expressed if combined with constricted pods. Based on this, the allele should be represented in capital letters as SS.
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muscle cells are not able to supply glucose for other tissues because a) they lack the glut2 transporter. b) they lack pyruvate carboxylase. c) they lack glucose-6-phosphatase. d) they lack the malate-aspartate shuttle. e) they lack glycogen phosphorylase.
Answers
Muscle cells are not able to supply glucose for other tissues because (c) muscle cells lack glucose-6-phosphatase.
Glucose-6-phosphatase is an enzyme involved in the process of gluconeogenesis, which is the synthesis of glucose from non-carbohydrate sources like amino acids and glycerol. This enzyme plays a crucial role in the final step of gluconeogenesis by converting glucose-6-phosphate to glucose, which can then be released into the bloodstream for use by other tissues.
Muscle cells, specifically skeletal muscle cells, have an important role in energy metabolism and can store glucose in the form of glycogen. However, they lack glucose-6-phosphatase, which means they are unable to convert glucose-6-phosphate back into glucose.
As a result, muscle cells cannot release glucose into the bloodstream or supply glucose to other tissues. Instead, they primarily use glucose as an energy source for their own metabolic needs, particularly during muscle contraction and exercise.
Other tissues, such as the liver, play a crucial role in maintaining blood glucose levels and supplying glucose to other tissues. The liver contains glucose-6-phosphatase and can release glucose into the bloodstream to meet the energy demands of other tissues when necessary.
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Which of the following statements about water policy is true?
a. Blackwater is cheaper and easier to process than greywater.
b. Desalination has no known negative impacts on the environment.
C. The water reclamation process is used to remove solids and impurities, but does not return
water to a potable state.
d. Water conservation efforts have been wholly ineffective.
e. The Safe Drinking Water Act limits the amount of pollution introduced into waterways.
Answers
Answer:
I believe it's C
Explanation:
Safe Drinking Water Act limits the amount of pollution introduced into waterways. Therefore, the correct statement is option E.
What is water policy?Water policy involves the set of laws, regulations, and strategies to govern the use, management, and distribution of water resources. Water policy takes decisions related to water supply, its quality, sanitation, etc.
The Safe Drinking Water Act is a federal law to protect the quality of public drinking water in United States. This act reduces the amount of pollutants added into waterways to protect human health. Environmental Protection Agency (EPA) is required by the law to set national drinking water standards for public water systems.
Blackwater is the wastewater from toilets and is expensive to process than greywater which is wastewater from sinks. However, desalination have also negative impacts on the environment.
Therefore, Safe Drinking Water Act is the water policy that limits the amount of pollution introduced into waterways.
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the most important chemical group that determines how tightly histones bind dna is
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The most important chemical group that determines how tightly histones bind DNA is the "acetyl group."
When acetyl groups are added or removed from histones, it influences the binding strength and accessibility of the DNA for gene expression.
The most important chemical group that determines how tightly histones bind DNA is the positively charged amino acid residues, such as lysine and arginine, that are present on the surface of the histone proteins. These residues interact with the negatively charged phosphate groups on the DNA backbone, forming electrostatic interactions that contribute to the stability of the nucleosome structure. Additionally, other chemical modifications to the histone proteins, such as acetylation or methylation, can alter the charge and chemical properties of the amino acid residues and affect the strength of the histone-DNA interaction.
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The most important chemical group that determines how tightly histones bind DNA is the degree of acetylation, which is influenced by the degree of phosphorylation of the N-terminal histone tails. Histones are highly alkaline proteins that are important components of chromatin.
The N-terminal amino acid tails of histones, which protrude from the histone core and are relatively accessible to the solvent, are heavily modified by posttranslational modifications, including acetylation, phosphorylation, methylation, and ubiquitination. Acetylation of histone lysine residues has been linked to increased chromatin accessibility, while deacetylation has been linked to condensed chromatin. The degree of acetylation is influenced by the degree of phosphorylation of the N-terminal histone tails, which affects the charge of the histones and influences their interaction with DNA.
The degree of acetylation is the most critical chemical group that determines how tightly histones bind DNA. Posttranslational modifications, such as acetylation, phosphorylation, methylation, and ubiquitination, heavily modify the N-terminal amino acid tails of histones.
The degree of acetylation has been linked to increased chromatin accessibility, while deacetylation has been linked to condensed chromatin. The degree of phosphorylation of the N-terminal histone tails affects the charge of the histones, which affects their interaction with DNA.
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Discuss how declines in sea ice algae are contributing to a decline in polar bear populations.
Answers
Answer:
i dont know
Explanation:
How do B cells know when to make antibodies?
A.) They are alerted by Helper T cells.
B.) They are always making antibodies just in case that pathogen is present.
C.) They are alerted by Macrophages.
D.) B cells will simply find the pathogen in the body and immediately begin making
antibodies to fight the pathogen.
Answers
Answer:
A) They are alerted by Helper T cells.
process by which earths life form change over time
Answers
Answer:
Adaptations develop from variations within a population and help organisms to survive in their given environment. Changes in populations accumulate over time; this is called evolution. The fossil record shows us that present-day life forms evolved from earlier different life forms.
Can someone help with this. 15 points.
Answers
Answer:
I think that it is A
Explanation:
since the farther the galaxy, the greater the red shift, the faster that galaxy is moving away from us.
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T/F Blood clotting is an example of positive feedback since the action of the effector opposes that of the stimulus.
Answers
answer:
False. Blood clotting is an example of negative feedback since the effector's action opposes the stimulus, thereby reducing or reversing the original response.
Scientists use the science called to classify organisms based on how they are
Answers
Answer:
taxonomy .
Explanation:
the science of naming organisms using a scheme of classification based on similar characteristics is named taxonomy .
( I don't know if this was the answer that you need )
please make my answer as brainelist.
what was the likely source of the 1918 and 1968 influenza pandemic strains? are they both thought to have arisen via recombination? how do we know?
Answers
The likely source of the 1918 and 1968 influenza pandemic strains were both avian-origin viruses. The 1918 strain is thought to have originated from an avian H1N1 virus, while the 1968 strain resulted from the recombination of an avian H3N2 virus with a human H2N2 virus. Both strains are believed to have arisen via recombination, also known as genetic reassortment.
We know this through scientific research and analysis of the viral genome sequences. Researchers have been able to study preserved samples of the virus from infected individuals and compare the genetic material with those of known avian and human viruses. By examining the similarities and differences in the genetic sequences, they can determine the likely source of the pandemic strains and understand the role of recombination in their emergence.
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which type of microscope would you use to study the daily development of living frog eggs? why?
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The type of microscope that would be suitable for studying the daily development of living frog eggs is a compound microscope.
A compound microscope is a type of microscope that magnifies the specimen with a combination of lenses. It has two sets of lenses, the objective lens, and the ocular lens. The objective lens is placed at the bottom of the microscope while the ocular lens is placed at the top of the microscope. The reason why a compound microscope is used to study the daily development of living frog eggs is that it has a higher magnification power. The objective lenses of a compound microscope have high magnification power, hence allowing for a more detailed and clear image of the specimen. Besides, living frog eggs are transparent, and a compound microscope uses bright field illumination which is best for examining specimens that are transparent. The magnification power of a compound microscope ranges from 4x to 100x, however, with an additional objective lens, the magnification power can be increased to 400x.
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What causes the Pacific Ring of Fire to have so many volcanoes.
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a,Describe the structure of starch and explain how its structure makes its ideal for its function as a storage carbohydrate.
Answers
Starch is a carbohydrate that serves as a storage carbohydrate. Starch has two types of molecules, amylose, and amylopectin, which give it its structure. The amylose is made up of long chains of glucose molecules, and the amylopectin has short branches that link to the long chains. It can store energy in a compact manner, making it easier for plants to transport it to other parts of the plant when needed. It is an excellent storage carbohydrate that is insoluble in water and easily broken down.
Starch is a carbohydrate that serves as a storage carbohydrate. Starch has two types of molecules, amylose, and amylopectin, which give it its structure. The amylose is made up of long chains of glucose molecules, and the amylopectin has short branches that link to the long chains. It can store energy in a compact manner, making it easier for plants to transport it to other parts of the plant when needed. It is an excellent storage carbohydrate that is insoluble in water and easily broken down. It is the structural arrangement of the glucose molecules that make it ideal for its function as a storage carbohydrate. It is a polysaccharide and consists of glucose units linked together with a glycosidic bond. The linkage in starch is alpha-glycosidic linkage. The alpha-glycosidic linkages make the molecule more stable, which makes it more difficult to break down by enzymes. The structure of starch helps it to store energy in a compact manner, making it easier for plants to transport it to other parts of the plant when needed.
In conclusion, starch is a storage carbohydrate made up of amylose and amylopectin. The arrangement of glucose molecules and the alpha-glycosidic linkage make it an ideal storage carbohydrate. The structure of starch helps it to store energy in a compact manner, making it easier for plants to transport it to other parts of the plant when needed.
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which of the following functions is food through the digestive system are called a peristalsis. b dialysis. c diffusion. d excretion.
Answers
A). The correct function that refers to the movement of food through the digestive system is peristalsis.
Peristalsis is the rhythmic contraction and relaxation of the smooth muscles of the digestive tract, which pushes the food forward along the digestive system. This movement allows for the breakdown and absorption of nutrients from the food, which is essential for providing energy and maintaining bodily functions.
Dialysis refers to the process of removing waste products from the blood in patients with kidney failure, while diffusion refers to the movement of molecules from an area of high concentration to an area of low concentration. Excretion refers to the elimination of waste products from the body through sweat, urine, and feces.
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A man presents to an ER with a large laceration sustained at a construction site 3 days before. The area around the laceration is erythematous, painful, and swollen. The erythema and swelling can be explained at a cellular level by all the following EXCEPTGroup of answer choicesmast cell degranulation and release of histamine.pro-inflammatory prostaglandins released.increased vasomotor tone (vasoconstriction) of the capillaries in the area.local reaction to acute phase reactants.
Answers
The erythema and swelling can be explained at a cellular level by all except increased vasomotor tone (vasoconstriction) of the capillaries in the area. Erythema causes skin redness.
What is erythema?Erythema refers to skin redness due to injury and/or inflammation in a given region of the body.
Erythema may be due to different factors (e.g., environment, virus infection, sunburn, etc).
Conversely, vasoconstriction refers to constriction of the blood vessels, which is caused by their cells walls.
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rapid burial and possession of hard parts are necessary conditions for the preservation of plant or animal remains as fossils. true false
Answers
True, rapid burial and possession of hard parts are necessary conditions for the preservation of plant or animal remains as fossils.
To understand why this statement is true, let's explore each condition separately:
1. Rapid burial: Rapid burial is essential for fossilization because it protects the remains from scavengers, decomposition, and weathering. When an organism dies, its soft tissues quickly begin to decay. However, if the remains are rapidly buried in sediment, such as mud, silt, or volcanic ash, the process of decomposition is slowed down. This allows enough time for mineralization to occur, which is the process where minerals from the surrounding environment replace the original organic material, preserving the organism's shape and structure as a fossil.
2. Possession of hard parts: Hard parts, such as bones, shells, or exoskeletons, are more likely to be preserved as fossils because they are more resistant to decay and decomposition compared to soft tissues. These hard structures provide a solid framework for mineralization to take place, allowing the organism's form to be preserved in the fossil record. Soft-bodied organisms, such as jellyfish or worms, have a lower chance of being preserved as fossils due to their lack of hard parts.
In conclusion, both rapid burial and possession of hard parts are crucial factors for the preservation of plant or animal remains as fossils. These conditions increase the likelihood of an organism's remains being preserved and eventually discovered by paleontologists, who study fossils to learn more about Earth's history and the evolution of life.
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saccharomyces cerevisiae is an economically important microorganism because it ferments sugars to produce which of the following? choose one or more: a. h2 b. co2 c. acetic acid d. ammonia e. lactic acid f. ethanol
Answers
Saccharomyces cerevisiae is an economically important microorganism because it ferments sugars to produce a CO₂ and ethanol. Option B and F is correct.
Saccharomyces cerevisiae is a type of yeast which is widely used in the various industries, including food as well as beverage, biofuel, and pharmaceuticals, due to its ability to ferment sugars.
One of the primary products of Saccharomyces cerevisiae fermentation is ethanol, which is an important biofuel and a key component in the production of the alcoholic beverages.
During fermentation, Saccharomyces cerevisiae also produces a carbon dioxide (CO₂ ) as a byproduct, which is utilized in various applications, such as in bread-making as well as carbonation in beverages.
Hence, B. F. is the correct option.
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b) How does S. enterica balance energy metabolism and carbon assimilation in your pathway?
Answers
Salmonella enterica balances energy metabolism and carbon assimilation through its central carbon metabolism pathway. This pathway includes glycolysis, the pentose phosphate pathway, and the tricarboxylic acid cycle. Glycolysis breaks down glucose into pyruvate, producing ATP and reducing power in the form of NADH. The pentose phosphate pathway generates NADPH, which is used for biosynthesis and oxidative stress defense. The tricarboxylic acid cycle utilizes pyruvate and other intermediates to produce more ATP and NADH.
S. enterica also uses carbon assimilation pathways, such as the Calvin-Benson cycle, to fix carbon dioxide and produce organic compounds. The energy and carbon sources are regulated by the availability of nutrients and the needs of the bacteria. S. enterica can use aerobic respiration, anaerobic respiration, or fermentation, depending on the oxygen levels and the electron acceptors present. Overall, S. enterica balances energy metabolism and carbon assimilation to maintain cellular homeostasis in different environments.
Below is a graph that shows the eating habits of a goldfish in an aquarium over a 2-day period. Most Active Least Actve- 9 A.M. 9 P.M 9 A.M. 9 P.M 9 A.M Monday Tuesday Which of the following conclusions is supported by the information on the above graph? OA. FIsh have a 6-hour circadian hythm. OB. Fish do not have internal responses to any natural cycles OC. Fish have a 24-hour circadian rhythm. OD. Fish have a 12-hour circadian rhythm
Answers
Answer:
D, Fish have a 24-hour circadian rhythm.
Explanation:
Got it correct on Study Island
Answer:
i did it
Explanation:
Which statement describes one feature of a mineral's definite chemical composition?
O It always occurs in pure form
It always contains certain elements
O It cannot form from living or once-living materials
It cannot contain atoms from more than one element
hs
Answers
What is Motor Nervous System?
Answers
The motor nervous system is a system present in the brain to help animals to speak, move and breathe.
Motor neurons are cells in the brain and spinal cord that enable locomotion, speech, swallowing and breathing by sending commands from the brain to the muscles that perform these functions. Nerve fibers are the longest in the body, with single axons extending from the base of the spinal cord to the toes.
For motor functions, there are the oculomotor nerve, trochlear nerve, trigeminal mandibular nerve (V3), abducens nerve, facial nerve, glossopharyngeal nerve, vagus nerve, spinal nerve accessory muscle and N. hypoglossus muscle. These are the working of the motor nervous system.
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What do waves transfer?
O matter
O energy
O water
particles
Answers
Answer:
Energy
Explanation:
In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels.
Answer:
energy
Explanation:
Wave' is a common term for a number of different ways in which energy is transferred: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels
in humans, the __________ determines the sex of the offspring because __________.
Answers
In humans, the sex chromosomes determine the sex of the offspring because they contain genes that code for male or female development.
The two sex chromosomes are X and Y, with females having two X chromosomes and males having one X and one Y chromosome. During fertilization, the egg from the mother carries an X chromosome, while the sperm from the father can carry either an X or a Y chromosome. If the sperm carries an X chromosome and fertilizes the egg, the resulting offspring will be female (XX). If the sperm carries a Y chromosome and fertilizes the egg, the resulting offspring will be male (XY).The Y chromosome contains the SRY gene, which codes for a protein that triggers male development. In the absence of this gene, female development occurs. Therefore, it is the presence or absence of the Y chromosome that ultimately determines the sex of the offspring in humans. While the sex of the offspring is determined by the sex chromosomes, other factors such as environmental and epigenetic factors can also play a role in sexual differentiation and development.
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I need help I just keep si g different answers to this question
Answers
Answer:
I think your right the first one
Explanation:
♀
Part of a genetic counselor’s job may be discussing with parents the probability of their
child inheriting a recessive allele for genetic disease. The counselor may use a Punnett
square to illustrate the chances of a child inheriting this allele. What is this genetic
counselor illustrating when constructing a Punnett square to advise these parents?
Answers
The Punnett square considers gamete combinations. These combinations will depend on parental alleles.
What is a Punnett square?A Punnett square is a diagram used to estimate genotypic and phenotypic proportions in a given genetic cross.
The Punnett square has into account gamete combinations to estimate genetic proportions in a given cross.
For example, in presence of a recessive allele designed as 'a' in a parent
A a
A AA Aa
A AA Aa
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Who proposed the theory of evolution by natural selection
Answers
Charles Darwin
The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century.
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A variegated leaf with green and yellow patches is used for an experiment to prove that chlorophyll is required for photosynthesis. Before the experiment the green portions (A), and the yellow portions (B), arte observed. What will be the colour of „A‟ just before and after the starch test? Also write the equation of photosynthesis and mark, well ash molecule the by-product is obtained.
Answers
Answer: The colour of A before the starch test is GREEN while after the starch test is BLUE- BLACK. The equation for photosynthesis is
6CO2 + 6H2O → C6H12O6 + 6O2.
Explanation:
PHOTOSYNTHESIS is the process by which green plants use energy from sunlight to manufacture their own food. It is a building up process since simple inorganic compounds such as carbondioxide and water are built up into large organic compounds such as glucose and OXYGEN is given off as a by product.
Oxygen given out in photosynthesis occurs in the light stage during the process of photolysis of water. This occurs when the chlorophyll traps, absorbs and captures light energy and become energised. The energised chlorophyll supplies energy which is to split molecules of water into hydrogen ion ( H+) and hydroxyl ion ( OH-). The hydroxyl ion is reconverted to water and oxygen is given out as a by product.
To show that chlorophyll is NECESSARY for photosynthesis, a variegated leaf with green and yellow patches is used for an experiment.
The green portion is marked A and the yellow portion marked B. The leaf is tested for starch using the procedure below:
--> place leaf in boiling water for half a minute to kill it.
--> decolorize leaf by placing it in hot alcohol.
--> dip decolorize leaf in hot water to soften it.
--> place leaf on tile and add iodine solution to it.
RESULT: It would be found that only the green parts contain starch as blue+black colouration is observed while yellow area is unaffected by iodine.
A red blood cell with a low concentration of oxygen will..
A. Absorb more oxygen as it passes by the lungs
B. Pass by the lungs as if nothing happened
C. Diffuse oxygen out into the lungs
Answers
A red blood cell with a low concentration of oxygen will absorb more oxygen as it passes by the lungs.
What is red blood cell?
Red blood cells are the most prevalent form of blood cell and the primary way by which vertebrates distribute oxygen to their body tissues through blood flow through the circulatory system. They are also known as red blood corpuscles, haematids, erythroid cells, or erythrocytes.
The kidneys detect an oxygen deficiency in the blood (hypoxia) and respond by secreting a hormone called erythropoietin when low oxygen levels are present (which may be caused by circumstances such as high altitude or low partial pressure of oxygen in the atmosphere) (EPO). The production of RBCs is accelerated by EPO, which increases the RBC count. The higher RBC count helps to make up for the lungs' reduced ability to hold oxygen.
Hence the correct option is a red blood cell with a low concentration of oxygen will absorb more oxygen as it passes by the lungs.
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Which characteristics of wombats is most likely an adaptation for attracting mates?
A.muscular legs and shoulders
B. thick brown fur
C. a pouch with milk glands
D. dropping with unique smell
Answers
Answer:
D
Explanation: