Explain why a virus such as the rhinovirus, which relies on close contact to spread, might evolve to favor less virulent forms.

Answer:

Carbon, Hydrogen, Oxygen, Nitrogen

Explanation:

In many biomolecules, we have Carbon, Hydrogen, Oxygen, Nitrogen. These elements are somewhat central to life activities.

If we take carbohydrates for instance, they are composed of Carbon, Hydrogen and Oxygen. Carbohydrates are energy molecules which are broken down to supply energy in the body.

Proteins all contain nitrogen because they involve the amino group. Hence, Carbon, Hydrogen, Oxygen and Nitrogen are most abundant in biomolecules.

Answer:

Substance 3

Cuz I am start Jp Im not I looked it up

Answer:

Substance 4

Explanation:

Metals are shiny

Answer:

B. Surface Tension

Explanation:

"The force they exert downward is less than the forces exerted among the water molecules on the surface of the pond, so the insect does not penetrate beneath the surface of the water."

Answer:

C

Explanation:

The force they exert downward is less than the forces exerted among the water molecules on the surface of the pond, so the insect does not Penetrate beneath the surface of the water.

Minerals can form through various processes, and there are three main ways that minerals can form: crystallization from magma, precipitation from solution, and deposition from hydrothermal fluids.

1. Crystallization from magma: When magma cools and solidifies, minerals can crystallize from it. This process typically occurs in igneous rocks, such as granite or basalt. As the magma cools, minerals with higher melting points start to crystallize first, while minerals with lower melting points crystallize later. This results in the formation of a variety of minerals within the rock.

2. Precipitation from solution: Minerals can also form when dissolved substances in water, known as solutes, become too concentrated and start to solidify. This process is commonly observed in environments like caves or evaporating bodies of water. As the water evaporates, the solutes become more concentrated and eventually precipitate out as minerals. This can lead to the formation of stalactites, stalagmites, or salt deposits.

3. Deposition from hydrothermal fluids: Hydrothermal fluids, which are hot water solutions containing dissolved minerals, can deposit minerals as they come into contact with cooler rocks. This commonly occurs in areas near volcanic activity or deep within the Earth's crust. As the hydrothermal fluids cool, minerals are deposited onto the surrounding rocks, forming veins or mineral deposits.

The west coast of the United States is known for its rich mineral deposits due to a combination of geological processes and historical tectonic activity. The region has experienced intense volcanic activity, which has led to the formation of mineral-rich magma.

Additionally, the west coast is situated along the Pacific Ring of Fire, where tectonic plates collide and subduction zones are present. This geological activity provides opportunities for hydrothermal fluids to interact with rocks and deposit minerals. Over time, these processes have resulted in the concentration of minerals in the west coast region.

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Answer: The most appropriate microscope for studying the internal parts of the cell is ELECTRON MICROSCOPE. The correct option is B.

Electron microscope, which is a compound microscope is usually used to study the internal environment  of the cell because of the easiness with which one can easily distinguish the cell organelles from one another. Electron microscope gives great clarification of the cellular components and allow scientists to observe minute details about cellular structures. Electron microscope usually magnify specimens to one million times of their real sizes.

Answer:

\(\boxed{\mathrm{Electron \: microscope}}\)

Explanation:

Electron microscopes have high range of magnification and resolution, the tiniest structures of cells and organelles can be viewed through the microscope. Scientists use it for biomedical research.

Humans have specialized cells in the body. Each cell type performs a unique function. Humans have different type of cells with different structures and functions.

All the cells in a human's body contain the same DNA. However, the human body is composed of many different types of cells. Because of gene regulation, each cell type possess a different set of active genes although all the cells of the body contain the same DNA.

Answer - different cell types all have the same genes but have different genes active.

Answer:

Some examples of predator and prey are lion and zebra, bear and fish, and fox and rabbit. The words "predator" and "prey" are almost always used to mean only animals that eat animals, but the same concept also applies to plants: Bear and berry, rabbit and lettuce, grasshopper and leaf.

Some examples of predator and prey are lion and zebra, bear and fish, and fox and rabbit.

In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed. The predator prey relationship develops over time as many generations of each species interact.

Predator and prey populations cycle through time, as predators decrease numbers of prey. Lack of food resources in turn decrease predator abundance, and the lack of predation pressure allows prey populations to rebound.

The relationships between predators and prey play an important role in structuring ecological communities, with predators influencing the dynamics of their prey in ways that cascade through ecosystems.

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Answer:

Explanation:

What he is trying to do is see if the repellant does any good. So the roses that do not get the repellent are the control group.

If they become 1/2 chewed up, and the others do not, the repellent works.

We had deer that visited our property and their favorite flower was the tulip. They are very sloppy eaters -- no table manners at all. So it was evident that they had been there,  I don't think they liked coffee and that's how the problem was solved.

They did not attack our vegetables (carrots which have a high natural sugar content), nor anything in the garden

Just the tulips around the house.

When the ribosome reaches the end of the mRNA strand during the process of translation, the polypeptide chain has been fully synthesized. The ribosome releases the polypeptide from the mRNA and dissociates from the mRNA molecule.

In eukaryotic cells, the polypeptide may undergo further modifications and folding to attain its functional conformation. It may be targeted to specific cellular compartments, such as the endoplasmic reticulum (ER), for further processing or secretion.

The direction of the ribosome/mRNA complex to the ER receptor is facilitated by a signal sequence present in the growing polypeptide chain. This signal sequence is recognized by a signal recognition particle (SRP), which is a complex of proteins and RNA. The SRP binds to the signal sequence and guides the ribosome/mRNA complex to the ER membrane, where it interacts with the ER receptor. This process is known as co-translational translocation and ensures that proteins destined for the ER or secretory pathway are properly targeted and inserted into the ER membrane.

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Answer:

Four

(For the extra words limit)

Answer:

False

Explanation:

the ones on the bottom are the ones burried the furthest therefore they are the oldest

One of the main reasons why sponges are considered an evolutionary "dead end" by many zoologists is that they lack many of the complex features found in other animal groups.

Sponges (Phylum Porifera) are placed in a taxonomic group beside other animals because they share several fundamental characteristics with animals, including being multicellular, heterotrophic, and lacking cell walls. However, sponges differ from other animals in several ways.

Because sponges lack many of the complex features found in other animal groups and have a relatively simple body plan, they are thought to represent an early branch in the animal tree of life that did not give rise to more complex animal groups. This is why they are sometimes referred to as an evolutionary "dead end."

For example, they have no true tissues, organs, or nervous system. Sponges also lack the ability to move actively and rely on water currents to bring food and oxygen to their cells.

Additionally, sponges have a simple body plan and do not exhibit the bilateral symmetry seen in most other animal groups. This means that they have no front or back, left or right, or top or bottom. Instead, sponges are asymmetrical or radially symmetrical, with a central cavity surrounded by many small openings called pores.

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Answer:

I believe your answer is: 2. eating a carbohydrate-rich diet and leading a sedentary (inactive) lifestyle

Explanation:

You have to be active to gain muscle strength and size.

Hope this helps!

The likelihood of two genes inheriting together increased depending on how close they were to one another on a chromosome.

In close proximity to another allele is allele B. B is the right answer because alleles that are positioned close to one another on a chromosome are more likely to be inherited together.

A creature has one allele for each gene, which it receives from both parents. When both parents pass on the same allele of a gene, the resultant child is said to be homozygous (homo means "same") for that allele.

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Answer:

A

Explanation:

And keep in mind that binary fission is asexual which is the opposite of sexual reproduction

-Bed thickness: Depositional episodes of varying sizes

-Color = Formed on land or in the water

-Clast size = Distance of transportation

Fossils are formed on land or in water, depending on the climate.

-Cross beds = Wind or water current direction

Sedimentary rocks are constructed from pre-existing rocks or remains of extinct creatures. They emerge from deposits that amass on the Earth's surface. Identifiable bedding or layering is typically present in sedimentary rocks.

Mesas and arches built of stratified sedimentary rock may be seen in many of the desert southwest's attractive landscapes.

Common sedimentary rocks include sandstone, limestone, and shale. These rocks frequently begin as sediments that are transported by rivers, then are dumped in lakes and seas. The sediments become dry and cement together to create rock when they are buried. Volcanic ash can be found in tuffaceous sandstones.

When a lot of living creatures die, biological sedimentary rocks are formed. This is one of the ways limestones may develop, and chert is an example of this kind of rock. Limestone can also form by precipitating directly out of the water.

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If a cell underwent mitosis, and its daughter cells were exposed to chemicals that damaged DNA,  then the stage of cell cycle checkpoint at which the cell would arrest would be G1 stage of the interphase.

The cell cycle is composed of two phases: interphase and the cell division phase.

The interphase takes place before cell division and it is the stage during which the cell prepares to divide, which means its content must be in the proper proportion to produce daughter cells with same intracellular content.  Interphase is composed of G1, S, and G2 stages.

Cell undergoes division, after the interphase. When the cell ends its division, then the produced daughter cells immediately begin the process again starting with interphase.  

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Answer:

See the answer below

Explanation:

If a cell containing 15% salt is placed in a 55% salt solution and osmosis takes place, water molecules would move from the cytosol of the cell to the surrounding salt solution until an equilibrium concentration is established between the two solutions. The cell would lose water to the 55% salt solution and become flaccid because it has a higher water potential than the surrounding solution.

Answer:hey reasoned that all rocks that were laid down in layers in large part were laid down under or by water or action by a fluid. They later discovered that both water and wind laid down the materials that later became lithified to become rocks.When these rocks were deposited as sediments, this area was most likely (1) under the ocean (2) a desert between high mountains (3) repeatedly covered by lava flows (4) glaciated several times Both organisms that formed the fossils found in rock layers 3 and 4 (1) lived during the same period of geologic time (2) lived in polar regions

The answer to the given question is the option C, that is, systolic blood pressure. Systolic blood pressure increases in direct proportion to exercise intensity.

Blood pressure refers to the force that blood exerts against the inner walls of the arteries as it circulates through the body. Blood pressure is expressed in terms of two numbers: systolic and diastolic blood pressure.Systolic blood pressure and Diastolic blood pressure

Systolic blood pressure represents the pressure of blood in the arteries during a heartbeat or when the heart contracts, while diastolic blood pressure represents the pressure of blood in the arteries during rest or between heartbeats.

Increased exercise intensity results in an increase in systolic blood pressure due to the increase in the workload on the heart and the need for more oxygen-rich blood to be supplied to the tissues.

Option C, systolic blood pressure, is the correct answer. This is because the heart pumps more blood with each beat during exercise, increasing the pressure in the arteries and resulting in a higher systolic blood pressure.

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The protein that a Mutant stele cannot produce is known as the PIN-FORMED Protein.

The stele is the central part of a plant stem or root that contains the vascular tissue, which is responsible for the transport of water and nutrients throughout the plant. The PIN proteins are important for the proper development and functioning of the stele, as they are involved in the transport of the plant hormone auxin.

In a Mutant stele that cannot produce the PIN protein, the transport of auxin is disrupted, leading to abnormal development of the stele and the plant as a whole. This can result in a variety of developmental defects, such as stunted growth, abnormal branching, and reduced fertility.

In summary, a mutant stele cannot produce the PIN protein, which is essential for the proper development and functioning of the stele and the plant as a whole.

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Answer:

Answer of Question 7

Fertilisers are inorganic chemicals which are not easily degraded. Excess use of fertilisers causes environmental pollution as their residual and unused amounts will become pollutants for air, water and soil.

Answer:

Answer of Question 8

Genetically modified crops are crops produced from organisms that have had specific changes introduced into their DNA using the mmethods of genetic engineering

Example

cotton

Jane goodall revolutionized the study of non-human primates by a. spending long periods of time in the field

The eminent primatologist Jane Goodall changed the way that nonhuman primates were studied by spending a lot of time in their natural environments, monitoring their behavior, and recording their social relationships. Goodall's landmark study of chimpanzees in Tanzania's National Park upended many preconceived notions about non-human primates and revealed fresh information about the intricate social lives of these creatures.

After spending years in the wild, she was able to form trusting bonds with the chimpanzees and gain their trust, which made it possible for her to watch their behavior covertly. She discovered several previously assumed to be exclusively human activities, such as the use of tools, hunting, and social hierarchies.

Complete Question:

Jane goodall revolutionized the study of non-human primates by:

a. spending long periods of time in the field

b. allow for behavioral experiments to be conducted

c. Studying genetics

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Answer:

option A

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Answer:

In tube 3, water molecules are moving towards higher concentration i.e., from beaker to tube content, thus the mass increases but in case of tube 4, water is moving out from tube contents to beaker, as the beaker contains more concentrated solution. Thus, the correct answer is 'Water is moving into Tube 3, and water is moving out of Tube 4.'

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