how are population sizes kept?

Answer:

An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body. Among the more important cell organelles are the nuclei, which store genetic information; mitochondria, which produce chemical energy; and ribosomes

Answer:

0.7cm

Explanation:

The buccinator muscle attaches into the buccal vestibule. This muscle is a thin, flat muscle that forms the majority of the cheek's muscular structure.

Its function is to compress the cheeks against the teeth and prevent food from being trapped between the teeth during chewing. It also plays a role in speech and facial expressions. The buccal vestibule is the space between the cheeks and teeth, and the buccinator muscle is responsible for its structure and function. The muscle originates from the maxilla and mandible bones and inserts into the orbicularis oris muscle, which encircles the mouth's opening.

The muscle that attaches into the buccal vestibule is the buccinator muscle. This muscle originates from the outer surfaces of the maxilla and mandible and inserts into the orbicularis oris muscle at the corners of the mouth. The buccinator muscle plays a crucial role in mastication, as it helps to keep food between the teeth by pressing it against the upper and lower molars. Additionally, it aids in facial expressions and assists in blowing air out of the mouth. In summary, the buccinator muscle is the primary muscle attaching into the buccal vestibule, contributing to chewing and facial expressions.

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Answer:

The percentage (%) of the alleles that code for this trait in the population will increase, as more individuals are born with the trait.

Explanation:

The more individuals get born expressing the trait, the higher its frequency gets in the population. By generation, there are more individuals carrying the allele for the advantageous trait. These individuals reproduce and increase the probabilities of the progeny to inherit the mentioned allele. When this sequence keeps occurring in the population over many generations, the allele percentage will increase. On the other hand, the other allele or alleles will decrease. Probably, if there are no changes that might influence or affect this pattern, the alleles for the advantageous trait will fixate, while the other allele might get lost.

Answer:

about 129-130

Explanation:

Answer:

The TATA box is an alternating sequence of Adenine and Guanine nucleotides that transcription factors bind to. The TATA box is found just before a gene. The transcription factors tell the RNA polymerase where to bind to begin transcription. This ensures the RNA polymerase will know where to start and which gene to transcribe.

Explanation:

In eukaryotes, the TBP protein binds to the TATA box during the formation of the RNA pol complex, while transcription factors help to promote transcription.

In conclusion, the TBP protein binds to the TATA box during the formation of the RNA pol complex, while transcription factors help to promote transcription.

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The two options that anaerobic can describe are:

Anaerobic means "without oxygen," so glycolysis can occur anaerobically, and organisms can also use anaerobic respiration in the absence of oxygen.

Anaerobes are important for several reasons:

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Answer:

A

Explanation:

The ability to maintain certain physical conditions, such as blood pH, body temperature, and other factors, within a narrow range of values most often depends on a process called homeostasis.

Homeostasis is the regulation of internal conditions within an organism, ensuring that the body functions optimally despite changes in external factors, this process is essential for maintaining the stable internal environment required for the proper functioning of cells, tissues, and organs. Homeostasis relies on various physiological mechanisms, including negative feedback loops and the actions of hormones and the nervous system. Negative feedback loops involve a sensor detecting a change in a specific condition, and the system responding by restoring the balance. For example, if body temperature increases, sweat glands are activated to cool down the body, bringing it back to the optimal temperature range.

The nervous system and hormones also play a crucial role in maintaining homeostasis, the nervous system can quickly respond to changes and send signals to various organs and tissues, enabling a rapid response to restore balance. Hormones, on the other hand, act as chemical messengers that regulate numerous physiological processes, such as metabolism, growth, and reproduction. In conclusion, the maintenance of certain physical conditions within a narrow range of values primarily depends on homeostasis, a process that involves the interplay of negative feedback loops, the nervous system, and hormones to ensure optimal body functioning.

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Answer:When blood sugar drops too low, the level of insulin declines and other cells in the pancreas release glucagon, which causes the liver to turn stored glycogen back into glucose and release it into the blood. This brings blood sugar levels back up to normal.

Explanation:

The lack of sleep affects the sympathetic nervous system in various ways. The sympathetic nervous system is part of the autonomic nervous system responsible for the body's fight-or-flight response. It increases heart rate, and blood pressure, and releases stress hormones to prepare the body for action.

When you experience a lack of sleep, your sympathetic nervous system becomes overactive. This overactivity leads to an increase in the release of stress hormones such as cortisol and adrenaline, which can cause increased heart rate and blood pressure. This, in turn, can increase the risk of developing cardiovascular problems.

Additionally, an overactive sympathetic nervous system can result in the suppression of the immune system, making it difficult for the body to fight off infections and recover from illness. Furthermore, lack of sleep can impair cognitive function, as the brain relies on sleep to consolidate memories and process information.

In conclusion, lack of sleep can significantly impact the sympathetic nervous system by increasing the release of stress hormones, elevating heart rate and blood pressure, suppressing the immune system, and impairing cognitive function. It is essential to prioritize adequate sleep to maintain optimal nervous system function and overall health.

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Answer:

Out

Explanation:

If the mass is less that means there is less water on the inside of the cell and more water on the outside. also because there is less water outside the cell, due to the properties of osmosis, it would tracel out.

Answer:

D

Explanation:

the train possesses kinetic energy,because the train is moving.

Answer:

Hope it helps princess☺️☺️

Explanation:

Its Testing amylum in leaf

Answer:

Explanation:

its c

Hope it help you.....

Answer:

A - The fact that the bone structures are similar supports the concept that the animals shared a common ancestor.

Explanation:

Homologous structures refer organs which are similar in structure which are derived from ancestors of similar species.

When the magma flows out from the crack when the seafloor is pulled apart, it forms new crust on the seafloor. When two tectonic plates are pulled apart, magma rises from the mantle to fill the gap and creates new crust on the seafloor. This process is known as seafloor spreading.

As the magma rises, it can flow out of cracks in the Earth's crust, creating volcanic eruptions on the seafloor.The magma that is erupted onto the seafloor is called basaltic lava. This type of lava is thin and runny, which allows it to flow easily over long distances. As the lava cools and hardens, it forms a new layer of crust on the seafloor. When two tectonic plates move away from each other, magma rises from the mantle to fill the gap created by the diverging plates. This magma is less dense than the surrounding rock and so it rises to the surface, where it solidifies to form new crust on the seafloor. This process is known as seafloor spreading.

During seafloor spreading, magma can also flow out of cracks in the Earth's crust. When this happens, it creates a volcanic eruption on the seafloor. The magma that is erupted onto the seafloor is called basaltic lava.Basaltic lava is thin and runny, which allows it to flow easily over long distances. As the lava flows, it cools and hardens, forming a new layer of crust on the seafloor. This new crust is made up of basalt, a type of rock that is rich in iron and magnesium.Seafloor spreading is responsible for the creation of new oceanic crust. Over time, this crust moves away from the spreading center, which creates new seafloor. As a result, the ocean floor is constantly being renewed and replaced.

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When magma flows out from a crack as the seafloor is pulled apart, it forms a new oceanic crust in a process called seafloor spreading.

1. The seafloor is made up of tectonic plates, which are large pieces of Earth's crust that float on the semi-fluid mantle layer below.
2. When these plates move apart, they create a gap or crack in the seafloor called a divergent boundary.
3. Magma, which is molten rock beneath the Earth's surface, rises up through the crack due to the reduced pressure caused by the separation of the plates.
4. As the magma reaches the surface, it cools and solidifies to form new oceanic crust.
5. This process is known as seafloor spreading because the new crust is continuously being created at the divergent boundary and pushing the existing crust away on both sides.
6. Over time, the accumulated new crust forms underwater mountain ranges known as mid-ocean ridges.

Example:
An example of seafloor spreading is the Mid-Atlantic Ridge. The North American Plate and the Eurasian Plate are moving apart, and magma rises up to fill the gap, creating new oceanic crust. As the magma cools and solidifies, it forms the Mid-Atlantic Ridge, which extends down the center of the Atlantic Ocean.

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Answer:

Even the smallest of gene mutations can dramatically change the way an organism looks or functions. Genes make our tissues, organs, and organ systems, so any small mutation here could seriously have a small chance of creating a new species of human. But that, however, would be an extremely rare case.

Mutation(mew-tay-chion) meaning: to be altered suddenly by genetic changes; multiply abnormally

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Answer:

In biology, a mutation is an alteration in the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis, meiosis, or other types of damage to DNA, which then may undergo error-prone repair, cause an error during other forms of repair, or cause an error during replication. Mutations may also result from the insertion or deletion of segments of DNA due to mobile genetic elements.

Explanation: Mutations affect organisms in two different ways. Genetic mutations are inherited DNA changes that can be passed on to the next generation

Answer:

Cellular, tissue, organ, organ system, and the organism level.

Explanation:

Answer:

Fluorite is very easy to identify if you consider cleavage, hardness and specific gravity.

Based on the diagram above which shows a model of the water cycle, letter X represents: A. the water table.

A water cycle is also referred to as hydrologic cycle and it can be defined as a biogeochemical process that is used to describe the continuous movement of water on land, in the atmosphere, and below the surface of planet Earth.

In Science, a water table is also referred to groundwater table and it simply describes the topmost portion of the underground zone on planet Earth that is usually saturated with water.

Based on scientific research and experiments, we can reasonably infer and logically deduce that the water table is represented by letter x in this diagram which shows a model of the water cycle

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Complete Question:

The diagram below shows a model of the water cycle. Letters A through F represent some processes of the water cycle. Letter X indicates the top of the underground zone that is saturated with water.

What does letter X represent?

answer choices

the water table

a flood plain

sea level

impermeable rock

Answer:

Environment?

Explanation:

I feel like it can also be genotype but not completely sure...

Answer:

you didn't add the whole question to the page. So i dont know what the answer is. Im sorry!

Explanation:

Answer:

0%

Explanation:

For Tonya or her siblings to inherit one of their parents must have that allele. Since both her parents have the recessive phenotype that means neither of her parents carry the dominant gene so it would be impossible for Tonya or her siblings to have webbed feet.

Answer:

Humans have 23 pairs of chromosomes, for a total of 46 chromosomes.

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The left-hand side of a chemical equation represents the reactants and the right-hand side represents the products.

A chemical reaction equation shows that starting compound is the reactants on the left and the final compound(s) is the products which is on  the right, and separated by an arrow.

For a chemical reaction to be balanced number of atom on each element and total charge has to be same in both the sides . Chemical reaction is classified into three basic parts reactant , product and yield and are separated by a an arrow . Reactant are the compound that goes for a reaction and under goes chemical changes .

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Answer:

In addition to depleting resources for forest-dependent communities, deforestation is contributing to an increase in small-scale natural disasters. “That means when there's heavy rainfall, forest soil can absorb water underground and disburse it to streams

Hope it helps :)

Answer:

hope it helps..

Explanation:

In addition to depleting resources for forest-dependent communities, deforestation is contributing to an increase in small-scale natural disasters. ... “That means when there's heavy rainfall, forest soil can absorb water underground and disburse it to streams.

Answer:

Option b

Explanation:

An unbalanced force moving everyone in Daniel and Maria's direction

The thymus is an endocrine gland that makes and helps certain white blood cells called T-lymphocytes mature. Hence, the answer is option D.

In your upper chest, just behind your sternum (breastbone) and in front of your heart, a small lymphatic gland can be found there, called the thymus. It helps to produce and train special white blood cells called T-Lymphocytes or T-cells.

The lymphatic system consists of various vessels, tissues and organs that defend against diseases and infections. They are part of the immune system. The cells that defend against diseases are called T-Lymphocytes. They are manufactured in the bone marrow, then transported to the thymus where they mature and become specialized.

The thymus gland starts to make T-Lymphocytes before birth. It is most active during childhood and stops working after puberty. At this stage, the body has all the T-Lymphocytes it needs.

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