Which evidence did Cuvier use to conclude that the world used to be full of species that are no longer around today?
A. Mammoth fossils were exactly identical to modem elephant bones.
B.The fossils of mammoth bones were similar but different to modern elephants.
C. Mammoth fossils had no similarities to modern elephants at all.
D. Mammoth fossils represented organisms that lived in places not yet explored.

Answer:

B. Constants

Explanation:

Constants are the factors that stay the same throughout the entire experiment no matter which group. The definition of a constant is "a situation or state of affairs that does not change." this furthers the point that constant is the correct answer because they don't change in the experiment.

B) I believe? Normally I'd say controlled variable

Answer:

Q3:False

Q2: A,

Q5: D

Q4: possibly D

Explanation:

Answer:

4

Explanation:

A simple trick for finding the number of offspring in a generation is counting the number of lines coming from the bar underneath that generation. A and B produced C, E, F, and H.

Answer: The carrying capacity of an environment is the maximum population size of a biological species that can be sustained in that specific environment, given the food, habitat, water, and other resources available.

Answer:

Carrying capacity, the average population density or population size of a species below which its numbers tend to increase and above which its numbers tend to decrease because of shortages of resources. The carrying capacity is different for each species in a habitat because of that species’ particular food, shelter, and social requirements.    (i tried)

Trees, shrubs, flowers, grasses, ferns, mosses, and algae are all members of the Plantae kingdom.

Characteristics that distinguish organisms in the kingdom Plantae include the following:

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The statements provided will be evaluated based on the dehydration synthesis reaction. True statements will be selected, and an explanation will be provided in the following paragraph.

Dehydration synthesis, also known as condensation reaction, is a chemical process that involves the formation of a covalent bond between two molecules by removing a water molecule. It is commonly observed in the formation of complex biological molecules such as carbohydrates, proteins, and nucleic acids.

Now let's evaluate the statements:

Dehydration synthesis is a process that forms a covalent bond between two molecules: True. Dehydration synthesis involves the formation of a covalent bond by removing a water molecule. This process is essential in the synthesis of complex molecules.

Dehydration synthesis results in the release of water: True. Dehydration synthesis involves the removal of a water molecule to form a covalent bond. This process results in the release of water as a byproduct.

Dehydration synthesis is an exothermic reaction: Not enough information. The statement does not provide enough information to determine if dehydration synthesis is an exothermic reaction. The heat released or absorbed during the reaction depends on the specific molecules involved.

Dehydration synthesis can occur in living organisms: True. Dehydration synthesis is a fundamental process in living organisms, particularly in the formation of macromolecules like proteins, carbohydrates, and nucleic acids.

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Answer:

1.  the complete removal or destruction of something.

2.the expulsion of waste matter from the body.

Explanation:

I googled it

Answer:

Elimination is when something is canceled or taken out of consideration.

Explanation:

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When bacteria happen to share genetic information then a copy of the plasmid is basically moved through a tubular structure and then transferred into another cell. This tubular structure is basically known as a sex pilus.

The bacteria are unicellular prokaryotes which have a single circular chromosome. Bacteria share the genetic material with the help of three major processes which are the conjugation, transformation and the transduction.

Sex pilus basically acts as a point of attachment site which promotes the binding of the bacteria with each other. When the contact is made with another bacteria, the pilus shortens up and brings both of the bacteria closer to each other.

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Sulforaphane potentiate anti-cancer effects of doxorubicin and cisplatin and mitigate their toxic effects like heart problems and enhance their effectivity.

Doxorubicin and cisplatin are the drugs that are used to treat various types of cancer including breast cancer, lung cancer, bladder cancer, and ovarian cancer.

The are also associated with side-effects like heart problems, etc.

Sulforaphane is a sulphur rich substance found in green vegetables which is evident to have anti-cancer effects and helps in prevention and treatment of various types of cancer.

It causes the cancer cells to self destruct by the process of apoptosis.

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Answer:

c

Explanation:

:)

Answer:

c

Explanation:

keep up the good work

Answer:

Carbon, Hydrogen, Oxygen

Explanation:

Answer:

Phylum Arthropoda

Explanation:

The human digestive system is a complex structure consisting of specialized cells, tissues, and organs that work together to break down food and extract nutrients from it, arranged in their order of least complex to most complex forms.

These parts are arranged in a specific order, from the least complex to the most complex, as described below.

1. Cells: The human digestive system is made up of various specialized cells that perform specific functions. For example, the stomach has cells that produce hydrochloric acid, while the small intestine has cells that produce enzymes that break down food.

2. Tissues: Groups of similar cells that perform a specific function are called tissues. In the human digestive system, there are four main types of tissues: epithelial, connective, muscle, and nervous tissue. Each of these tissues plays a critical role in the digestive process.

3. Organs: Organs are structures that are made up of different types of tissues and work together to perform a specific function. The human digestive system has several organs, including the mouth, esophagus, stomach, small intestine, large intestine, liver, and pancreas. Each of these organs plays a crucial role in the digestive process.

4. Organ systems: The human digestive system is part of a larger organ system known as the digestive system. This system is responsible for processing food, extracting nutrients from it, and eliminating waste products. Other organ systems in the human body include the respiratory system, the circulatory system, the nervous system, and the endocrine system.

The digestive system thus works in conjunction with these systems to maintain homeostasis in the body.

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Answer:

Commensalism

Explanation:

Answer: A

Explanation:

One aspect that helps make the human brain unique compared to other species is the size and complexity of the cerebral cortex, the outer layer of the brain that is responsible for many higher level functions such as perception, consciousness, and decision-making.

The human cerebral cortex is much larger and more complex than the cortex of other species, with a greater number of folds and more densely packed neurons. This increased size and complexity are thought to be a key factor in the advanced cognitive abilities that make us human, such as our capacity for abstract thinking, language, and self-awareness.

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C) Restriction enzymes are responsible for producing "sticky ends".

Restriction enzymes, also known as restriction endonucleases, are enzymes that can cut DNA at specific recognition sequences, which are usually palindromic in nature. When restriction enzymes cut DNA, they create double-stranded breaks that can result in two types of DNA fragments: blunt ends or sticky ends.

Blunt ends are produced when the restriction enzyme cuts both strands of DNA at the same position, resulting in a straight cut with no overhanging ends. In contrast, sticky ends are produced when the restriction enzyme cuts the two strands of DNA at different positions, resulting in overhanging ends that can pair up with complementary sequences.

The overhanging ends of sticky ends can be used to create recombinant DNA molecules. For example, if two DNA fragments are cut with the same restriction enzyme, their complementary sticky ends can be annealed together and joined by DNA ligase to create a new, hybrid DNA molecule.

PCR (polymerase chain reaction) is a technique used to amplify DNA sequences and does not involve the use of restriction enzymes. DNA ligase is an enzyme used to join DNA fragments together. Bacterial plasmids are small, circular pieces of DNA that can replicate independently of the host genome and often contain genes that confer advantageous traits to the bacteria.

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The medium-sized African and Asian antelopes known as gazelles have done just that.

Even while it's unlikely that any of the roughly 19 species of gazelles could outrun a cheetah in a race, some of them have gotten very proficient at persuading the strong cat not to attempt and take them down.

Even though they tend to be quiet and peaceful, gazelles are skilled communicators. Gazelles have a variety of ways to communicate using only their bodies, from dodging a chase to attracting a partner.

Stotting is among the more intriguing instances of gazelle body language. Stotting, sometimes known as pronking, is the act of gazelles repeatedly leaping into the air while holding their backs arched and all four legs erect.

Therefore, The medium-sized African and Asian antelopes known as gazelles have done just that.

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The option that best represents how one neuron communicates with another is c. using chemical substances.

A neuron is a type of cell that is specialized in transmitting information. It is known to be the fundamental building block of the nervous system. The main feature that distinguishes it from other cells is that it has a long process that extends from its body called an axon.

Chemical communication is the process through which neurons communicate with one another. When an electrical impulse reaches the axon terminal of one neuron, it triggers the release of chemicals called neurotransmitters into the synaptic cleft.

The neurotransmitter molecules bind to receptors on the dendrites of the postsynaptic neuron, which then initiate another electrical impulse. This is known as a chemical synapse, and it is the most common way that neurons communicate with each other.

Neurotransmitters have many functions, including: They can excite or inhibit the postsynaptic neuron. They can regulate synaptic plasticity. They can modulate the release of other neurotransmitters. They can act as neuromodulators.

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When the eagle saw the mouse, it got exited that he was finally going to have dinner today.

The event that occur is that when the eagle saw the mice, using it nervous system detect the signal,then send the signal to the brain, the brain then interpret it as food , then the eagle catch it and eat it.

Nervous system is the system in the body that comprises of brain, spinal cords and nerves which detect electrical impulses and send the signal to the brain which then interpret the signals into information and then the body respond base on the interpretation.

Therefore, The event that occur is that when the eagle saw the mice, using it nervous system detect the signal,then send the signal to the brain, the brain then interpret it as food , then the eagle catch it and eat it.

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Answer:

A congenital heart defect (CHD) is a heart problem that a baby has at birth. It is caused by abnormal formation of the heart during growth in the womb. In most cases, when a baby is born with a congenital heart defect, there is no known reason for it. Some types of congenital heart defects can be linked to an abnormality in the number of a baby’s chromosomes. They may be linked to single gene defects. Or they may be linked to environmental factors. In most cases, there is no clear cause that can be found for the heart defect. They are often thought to be caused by many factors. The factors are usually both genes and the environment. This means that genes from both parents plus unknown environmental factors lead to the problem.

Explanation:

Human embryos are most sensitive to the effects of teratogens that cause limb deformities during the period of limb development, which occurs during the embryonic period between approximately weeks 4 to 8 of gestation.

During this time, the limb buds, which will develop into the arms and legs, are formed, and the process of limb differentiation and growth is underway. Any disruption to the genetic or environmental cues that regulate this process can potentially lead to limb deformities, such as missing fingers, toes, or entire limbs, or abnormal limb shapes or sizes.

Teratogens are substances or agents that can interfere with normal embryonic development and cause birth defects. Some examples of teratogens that can cause limb deformities include certain drugs (e.g., thalidomide), chemicals (e.g., ethanol), and infections (e.g., rubella virus).

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The molecule of heredity, contains the "blueprint" for building an organism is called DNA.

DNA, or deoxyribonucleic acid, is the molecule of heredity and contains the genetic information necessary to build an organism. It is made up of nucleotides, which are the building blocks of DNA. The nucleotides are composed of a sugar molecule, a phosphate group, and a nitrogenous base. The four nitrogenous bases found in DNA are adenine, thymine, guanine, and cytosine. The sequence of these nitrogenous bases is what determines the genetic code that is passed down from one generation to the next.

Therefore, DNA is the molecule that carries the genetic information necessary for the development and growth of an organism.

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Condensation does not release carbon

The body uses stored glucose homeostasis and gluconeogenesis to maintain blood glucose levels during vigorous exercise without eating.

During vigorous exercise, the body relies on glucose for energy production in muscles. The body maintains blood glucose homeostasis by using glucose stores in the liver and muscles and increasing glucose production through a process called gluconeogenesis.

Gluconeogenesis is the synthesis of glucose from non-carbohydrate sources such as amino acids, lactate, and glycerol. This process is stimulated by hormones such as glucagon and cortisol, which are released during exercise to increase blood glucose levels.

Additionally, the body may break down glycogen stores in the liver and muscles to release glucose into the bloodstream. Together, these mechanisms help to maintain blood glucose levels during exercise, even in the absence of food intake.

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During vigorous exercise, the body's demand for energy increases, and glucose is the primary source of energy for the muscles. In order to maintain blood glucose homeostasis, the body uses several mechanisms to ensure that glucose is available to the muscles even in the absence of food intake.

These mechanisms include:

Glycogenolysis: The liver and muscles store glucose in the form of glycogen, which can be quickly broken down to release glucose into the bloodstream. During exercise, glycogen stored in the muscles is broken down to release glucose, which is used by the muscles for energy.

Gluconeogenesis: The liver can also produce glucose from non-carbohydrate sources, such as amino acids and fatty acids, through a process called gluconeogenesis. This helps to maintain blood glucose levels even when there is a limited supply of dietary carbohydrates.

Insulin and glucagon: Insulin and glucagon are hormones that play a key role in regulating blood glucose levels. During exercise, insulin secretion decreases, while glucagon secretion increases. This promotes the breakdown of glycogen and the release of glucose into the bloodstream.

Hormones: Other hormones, such as adrenaline and cortisol, are also involved in regulating blood glucose levels during exercise. Adrenaline, for example, can stimulate the breakdown of glycogen and the release of glucose from the liver.

Muscle glucose uptake: During exercise, the muscles increase their uptake of glucose from the bloodstream. This is facilitated by the action of insulin, but even in the absence of insulin, the muscles can take up glucose through a process called insulin-independent glucose uptake.

Overall, these mechanisms work together to ensure that glucose is available to the muscles during vigorous exercise, even in the absence of food intake. The body is able to maintain blood glucose homeostasis by regulating the balance between glucose production and glucose utilization, and by adjusting the secretion of hormones such as insulin and glucagon.

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The sodium ions and potassium ions move between the plant cell and pond water by the process of diffusion.

Diffusion is the process by which substances move from region of high concentration to regions of low concentration.

Based on the chart, sodium ions and potassium ions move between the plant cell and pond water by the process of diffusion.

This is because the ions are at higher concentration in the pond water.

During the process, the ions move through ion channels in and out of the plant cell from the pond water.

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Answer:

The cells and neurons you observed are what skin, nerve, muscle, and blood tissues are made out of.

The example of sensitization from the given alternatives is that 'A dog was hit by his previous owner, and now the dog cowers each time his new owner reaches out to pet him.'

Sensitization refers to the process in which an organism becomes more sensitive to stimuli, both good and bad. It happens when the body's nervous system becomes oversensitized to a particular stimulus that it begins to respond even to weaker or non-threatening stimuli.

The example given in the first option refers to a simple reflex action that occurs in response to the puff of air that is blown into the eyes during the eye examination. The third option is about sensory adaptation, which occurs when sensory receptors are exposed to stimuli for an extended period, resulting in a reduction in sensitivity. The fourth option refers to the fight or flight response that occurs as a result of a threatening stimulus, in which an individual's body prepares to confront or flee from danger.

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Answer:

I guess nitrogen cycle since rhizobium plays an important role in nitrogen cycle and it lives on the root nodules of leguminous plants in the soil.

The nitrogen cycle is VERY dependent on the processes carried out by soil bacteria.

The nitrogen cycle is a biogeochemical cycle in which nitrogen changes into several chemical forms as it circulates between atmospheric, terrestrial and marine ecosystems. Nitrogen transformation can occur through both biological and physical processes.

The nitrogen cycle is a repeated cycle of processes in which nitrogen passes through living and non-living things: the atmosphere, soil, water, plants, animals and bacteria.

The nitrogen cycle is important because nitrogen is an essential nutrient for life on Earth. Nitrogen is an important component of amino acids, the building blocks of proteins, and nucleic acids, the building blocks of genetic material.

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