what is a biotic factor that affects population size A. weather B. human impact C. avaliable sunlight D. Trash consumption

An example of a plant virus is the Tobacco mosaic virus (TMV), which when infecting plants, cause them to have an stunted and irregular growth of their tissues, such as leaf and stems, which provokes the plant to not developing well

Answer:

Land....... Biosphere

Answer:

Tropical Rainforest

Explanation:

Answer: the nucleus

Explanation: think of it as the brain of the cell it holds all of the information to control the cell

Answer:

The nucleus.

Explanation:

The nucleus has very important roles to play. As it contains genetic material, it coordinates cell activities like protein synthesis and cell division.

The skin is made up of three main layers: the epidermis, dermis, and hypodermis.

The epidermis is the outermost layer of the skin. It is composed of multiple layers of stratified squamous epithelial cells. The topmost layer of the epidermis, called the stratum corneum, consists of dead cells that provide a protective barrier for the skin. The epidermis also contains melanocytes, which produce the pigment melanin that gives the skin its color.

Beneath the epidermis lies the dermis, which is made up of connective tissue. It contains blood vessels, nerves, hair follicles, sweat glands, and sebaceous glands. The dermis is responsible for providing strength, elasticity, and support to the skin. It also houses sensory receptors that enable us to feel touch, pressure, temperature, and pain.

The hypodermis, also known as the subcutaneous tissue or the superficial fascia, is the deepest layer of the skin. It consists mainly of adipose tissue (fat) and connective tissue. The hypodermis serves as an insulating layer, helping to regulate body temperature and providing cushioning and padding to protect the underlying structures.

In summary, the layers of the skin are arranged in the following order: epidermis, dermis, and hypodermis. The epidermis consists of stratified squamous epithelial cells and contains melanocytes. The dermis is made up of connective tissue and houses blood vessels, nerves, and various glands. The hypodermis consists of adipose and connective tissue, providing insulation and padding.

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The correct answer is D. Sugar provided the chemical energy for driving cellular respiration, resulting in greater production of carbon dioxide bubbles. Sugar is a chemical used by heterotrophic organisms to perform cellular respiration, which ultimate product is carbon dioxide (CO2).

Answer:

Beetles

Explanation:

They are the outgroup of the cladogram, and every new node is a development of a new trait. Since beetles have only the original node, they are the most primative.

Answer:

Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect. Click the image for a larger view.

Explanation:

Answer:

the top of the pyramid because they are the predators of some animals

Explanation:

The term used to describe amino acids in solution, which contain both a negative and positive charge, is a zwitterion.

Amino acids are composed of an amino group (-NH2) and a carboxyl group (-COOH) which can ionize in solution. The amino group can donate a proton (H+) and become positively charged, while the carboxyl group can accept a proton and become negatively charged.

Therefore, amino acids in solution can have both a positive and negative charge, making them a zwitterion.

Amino acids in solution are considered to be a zwitterion due to the presence of both a positive and negative charge.

Amino acids are the building blocks of proteins, and they are composed of an amino group (-NH2), a carboxyl group (-COOH), and a side chain (R-group) which varies in structure among different amino acids. In solution, amino acids can exist in different forms depending on the pH of the solution.

At a low pH (acidic), the amino group tends to hold onto its proton and remain positively charged, while the carboxyl group donates its proton and becomes negatively charged.

This results in the amino acid having a net positive charge, and it is referred to as a cation.

At a high pH (alkaline), the carboxyl group tends to hold onto its proton and remain neutral, while the amino group donates its proton and becomes negatively charged. This results in the amino acid having a net negative charge, and it is referred to as an anion.

However, at a pH around 7 (neutral), the amino group and carboxyl group tend to donate and accept protons in equal amounts, resulting in the amino acid having both a positive and negative charge. This form is known as a zwitterion.

Therefore, amino acids in solution contain both a negative and positive charge, and thus are termed a zwitterion.

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One gene work as a barcode for one species and not for another because for different species different barcodes are used.

Every specie is different than another organism genetically so it also needs different barcodes for every other specie. If all the species are made up of the same gene then we can say that one barcode is used for all of them but its not the case.

Every organism has different and its own gene so one gene barcode is not acceptable for all species but for the original one so we can conclude that one barcode is used for one species and not for another.

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The largest negative impact on biodiversity is : D ) building over habitats.

Biodiversity is the variety and variability of life on Earth and it is a measure of variation at genetic, species and ecosystem level.

The largest negative impact on biodiversity is building over habitats and climate change affects ocean by decreasing biodiversity in it and decrease in food resources can decrease the habitat size.

The establishment of a bird reservation is a way to preserve ecosystem as reservation provides suitable environment to organism. Biodiversity is all the different kinds of life in one area-- variety of animals, plants, fungi, and microorganisms like bacteria that make up nature.

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Note: The question given on the portal is incomplete. Here is the complete question.

Question: What has the largest negative impact on biodiversity?

A ) severe weather

B ) increased predation

C ) the introduction of new species

D ) building over habitats .

The statement “current taxation policies encourage residential development on farmland” is false because in many jurisdictions, farmland is granted favorable tax treatment to encourage agricultural use and preserve open space.

Current taxation policies generally do not encourage residential development on farmland. In fact, many jurisdictions have implemented policies and regulations that aim to protect farmland from development in order to preserve its agricultural value.

For example, in the United States, the federal government provides tax incentives for landowners who voluntarily place conservation easements on their farmland, which restricts its use for non-agricultural purposes. Additionally, many states have implemented programs that provide property tax relief for farmland owners who keep their land in agricultural use, the statement is false.

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Answer:

Cheetahs, Tigers, Hyenas, Skunks, Chipmunks, Lemurs

There are numerous such instances of spotted and striped animals that display distinctive patterns as a result of their genetic makeup.

Leopard (Panthera pardus): Leopards have a stunning coat with a colour that varies from region to region and is embellished with rosettes, which are rose-shaped dark markings around by rings of lighter colour. The leopard in its native environment can blend in with these rosettes.

Acinonyx jubatus, the cheetah, is an animal with characteristic solid black spots on its tan coat. These spots are distinctive among big cats and help with camouflage.

Leopards and jaguars (Panthera onca) both have rosette-like spots, however jaguars frequently have a central dot within each rosette. Compared to a leopard, the pattern is more compact and has the potential to be packed more tightly.

Thus, Cheetahs, Tigers, Hyenas, Skunks, Chipmunks, Lemurs are examples of striped animals.

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Answer:

The correct option is D Spleen

Explanation:

The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. The spleen is not part of the digestive system, however, is connected to the blood vessels of both the stomach and the pancreas.

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 Thomas Hunt Morgan, an American geneticist, is frequently credited with using fruit flies in his research to experimentally validate the hypothesis of natural selection.

Fruit flies (Drosophila melanogaster) were utilized by Morgan and his Columbia University students to research genetics and inheritance in the early 20th century.

They discovered that some characteristics, including eye color and wing shape, were passed down from one generation to the next and that the frequency of these characteristics fluctuated with time. Additionally, they discovered that some features appeared to be more prevalent in particular populations of fruit flies, which appeared to be the result of natural selection.

These findings served to validate Darwin's theory of natural selection and establish genetics as a legitimate scientific field.

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Sympathetic axon terminals form a branching network of swollen segments called varicosities. These varicosities enhance the efficiency and effectiveness of sympathetic neurotransmission by enabling widespread contact and efficient release of neurotransmitters to target cells.

Sympathetic axons are part of the autonomic nervous system, specifically, the sympathetic division, which is responsible for the "fight or flight" response. When these axons reach their target tissues, such as smooth muscles or glands, they form a unique structure called varicosities.

Varicosities are swollen segments or bulbous enlargements that occur along the length of sympathetic axon terminals. Instead of forming discrete individual endings like in other types of neurons, sympathetic axons undergo repeated branching, resulting in the formation of numerous varicosities along their length. These varicosities allow for extensive and widespread contact with target cells, maximizing the effectiveness of sympathetic signaling.

The presence of varicosities provides several advantages for sympathetic neurotransmission. First, the branching nature of varicosities allows for the release of neurotransmitters at multiple sites simultaneously, ensuring widespread activation of target cells. Second, the enlarged size of varicosities allows for the storage and release of a large number of neurotransmitter molecules, facilitating rapid and robust communication between sympathetic neurons and their target tissues.

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Because of its abundance, chlorophyll covers other pigments like xanthophyll and carotenoids that are yellow and orange in colour. Other pigments can be observed in leaves as the amount of chlorophyll decreases.

You could believe that the orange and yellow hues, or pigments, are only present in leaves during the fall, but in reality, they are present all year long; we can just not see them because of the intense green pigment that is also present in leaves hides them.

As I've mentioned in a number of my earlier pieces, leaves yellow and orange hues come to light when chlorophyll, the pigment that gives leaves their green appearance, is lost from the leaf. These pigments were hidden by chlorophyll in the summer.

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Answer:

I believe it's C

Explanation:

Photosynthesis is when energy, carbon dioxide and water react to produce glucose and oxygen. It is an endothermic reaction (takes in more energy than it gives off).

glucose

+

oxygen

(+ energy)

→

carbon dioxide

+

water

C

6

H

12

O

6

+

6

O

2

→

6

CO

2

+

6

H

2

O

Respiration is the process of producing energy from glucose. It uses glucose and oxygen to give water, carbon dioxide and energy (this making it exothermic).

carbon dioxide

+

water

+

energy

→

glucose

+

oxygen

>

6

CO

2

+

6

H

2

O

→

C

6

H

12

O

6

+

6

O

2

As you can see from the equations, they are essentially the reverse of each other.

Another difference is how they are used. Respiration occurs in the mitochondria of all living cells, whereas only plants photosynthesise.

In plants, they make their own glucose using the sun's energy, then respire to allow them to use the glucose for energy they can use. The glucose can also be stored and used in many other ways other than in respiration.

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Answer:

D. Photosynthesis provides the energy for cellular respiration

Explanation:

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products, and ATP is energy that is transformed from the process.

Answer:

A mutation happens by chance it cause by the rna polymerase copying the wrong piece of code from your dna leading the wrong protein to be made.

This could either be beneficial or not as it causes variation in a species helping them evolve becuase of survival of the fittest or threatening extinct of the entire specise if their environment has changed as it could threat their survival therefore having variation with in species could help increase their survival rate

Answer:

A = rough er

B = chloroplast

D = Cytoplasm

C = most likely a lysosome

E = cell wall

The correct statements about the assimilation of nitrogen for biosynthesis are:

1. Glutamine synthetase can be used to assimilate NH₃.
2. Glutamate dehydrogenase can be used to assimilate NH₃.
3. In the absence of fixed nitrogen, some cells can use nitrogenase to assimilate nitrogen from N₂.


1. Glutamine synthetase assimilates NH₃ by converting it into glutamine, which is an essential amino acid for biosynthesis.
2. Glutamate dehydrogenase assimilates NH₃ by converting it into glutamate, another important amino acid for biosynthesis.
3. Nitrogenase is responsible for fixing nitrogen, converting N₂ to NH₃, which can then be assimilated by cells. It is used by some cells when fixed nitrogen is not available in the environment.

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ukinnam kanyam daytan hahah

Answer:

Why do you think the average beak depth of the birds increased?

Explanation:

Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.

I hope this helps!! god bless!! - Natalia

The event that occurred at approximately the same time as the mammoths' extinction was the global climate change known as the Younger Dryas. This climate change had a significant impact on the environment and is considered one of the factors that led to the extinction of mammoths.

According to the video from Seeker on "How Close Are We to Resurrecting Extinct Species?", an event that occurred at approximately the same time that the mammoths went extinct was a global climate change known as the Younger Dryas.

During this period, around 12,900 years ago, the Earth experienced a sudden cooling event, leading to a significant drop in temperatures. This climate change had a major impact on the environment and played a role in the extinction of various species, including the mammoths.

The Younger Dryas lasted for approximately 1,200 years and affected many parts of the world, including North America, Europe, and Asia. This event caused changes in vegetation and disrupted the ecosystems in which mammoths and other animals lived. The combination of the changing climate, reduced food availability, and increased competition from other species likely contributed to the extinction of mammoths.

It is important to note that the exact cause of the mammoths' extinction is still a subject of scientific debate, and the Younger Dryas is one of the factors believed to have played a role. Other factors, such as overhunting by early humans and the loss of suitable habitats, may have also contributed to their extinction.

In conclusion, the event that occurred at approximately the same time as the mammoths' extinction was the global climate change known as the Younger Dryas. This climate change had a significant impact on the environment and is considered one of the factors that led to the extinction of mammoths.

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In Drosophila, with two mutations, 82 offspring would have Stubble bristles and curled wings in this cross.

The anticipated frequency of offspring with both mutations can be calculated if Stubble (Sb) and Curled (cu) mutations are connected on Drosophila chromosome III and are 8.2 map units apart. This female possesses one copy of the Stubble mutation and one wild-type allele (+) for the curled gene, making her the genotype Sb cu / + +. The curled mutation is present in two copies in the male, who is + cu / + cu. The recombination frequency between the two mutations is to be considered to get predicted frequency of children bearing both mutations. The frequency of crossing-over events between Stubble and coiled loci during meiosis correlates to the recombination frequency.

If 1000 offspring were recovered, offsprings expected to have both mutations would be =

8.2% of 1000

= 0.082 × 1000

= 82

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Complete Question:

in Drosophila, two mutations, Stubble(Sb) and curled(cu), are linked on chromosome lll. Stubble is a dominant gene that is lethal in a homozygous state, abd curled is a recessive gene.

female: Sb cu / + +

male: + cu / + cu

if the cross is made, and if Sb and cu are 8.2 map units apart on chromosome lll, and is 1000 offspring were recovered, How many ofspring would have stubble bristles and curled wings?