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Why do these sisters have different traits? Use these words in your response (protein, molecule, structure, trait, variation) describing what would determine these traits at the molecular scale.

Answer:

The correct answer would be - strontium, magnesium, beryllium.

Explanation:

As we know that the number of the same valence electrons is most likely to exhibit similar physical and chemical properties so the elements of the particular group in the periodic table have a similar number of physical and chemical properties and a similar number of the valence electrons.

For example, group 2 elements are known as alkaline earth metals, and strontium, magnesium, beryllium, and calcium are the same group elements thus, they have the same chemical and physical properties as they have 2 valence electrons.

Answer:

Based on everything that you have learned so far, provide an explanation for how the different shades of skin color from pinkish white to dark brown evolved throughout human history. Darker skin colors evolved because they provided increased fitness in early human populations living in equatorial Africa.

Explanation:

Answer:

The correct answer would be - Characteristics can be lost in evolution.

Explanation:

The new evidence helps in developing a new hypothesis. In this case, new evidence proved that the Chondrichthyes diverged after the evolution of bone had started instead of before the evolution started. This process called atavism where an ancestral genetic trait reappears after having lost. This leads to loss of the traits in the evolution

This can take place by knocking the mutation out to overriding the gene by the old gene or overriding the new trait by the old trait during the evolution period.

At one time, Chondrichthyes were thought to have diverged from other vertebrates before the evolution of bone. Now we have concluded that the Chondrichthyes diverged after the evolution of bone had started might be their characteristics lost in evolution according to atavism.

Recurrence in an organism of a trait or character typical of an ancestral form and usually due to genetic recombination. This leads to the loss of the traits in the evolution.

Hence, Chondrichthyes diverged after the evolution of bone had started might be their characteristics lost in evolution according to atavism.

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Answer:

idek sorry

Explanation:

Answer:

Immunization is one of the most effective processes of preventing or treating dangerous disease. It should be told and advertise to the general public about the facts and importance of vaccination. Doctors and government should explain the reports and ratio that the people who are taking the vaccination in the proper dose and the right amount of vaccination are about 9 timeless likely to have to the other people. It is essential to get a proper dose and proper amount to avoid the development of resistance.

There are several forms of vaccine and they have a different schedule from each other. Every vaccine is safe but one needs to know the cycles, dose and amount of the vaccine. Yes, we should spread out the inoculation schedule to prevent confusion of a young person.

Answer:

The correct answer is ''collect absorbed nutrients for metabolic processing in the liver.''

Explanation:

Portal circulation is called that system that is between two large capillary beds, represented by the gastrointestinal organs, pancreas and spleen on the one hand, and the liver on the other. Hence, any venous system of the organism that is located between two capillary territories is called "portal system".The hepatic portal vein collects the deoxygenated blood from the gastrointestinal system, spleen and pancreas, this blood is venous and comes deoxygenated, in addition to being loaded with the nutrients absorbed in the digestive process, so it is a blood subjected to a high overload, but that quickly, thanks to its distribution through the liver, it will be bypassed to various chemical processes to extract a large part of the nutrients from it, and purify and eliminate toxins.

The function of the hepatic portal circulation is to collect absorbed nutrients for metabolic processing in the liver. Therefore, option D is correct.

The hepatic portal system is also known as the hepatic portal circulation or portal venous system. It is a specialized network of blood vessels that carries blood from the gastrointestinal tract, spleen, and pancreas to the liver. It plays a crucial role in directing nutrient-rich blood from the digestive organs to the liver for processing, storage, and detoxification before it is distributed throughout the rest of the body.

The hepatic portal system allows the liver to regulate the composition of blood coming from the digestive organs before it enters general circulation. Thus, option D is correct.

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Answer:

B- reduction in biodiversity

Answer:

D. water vapor

Explanation:

water vapor is a gas and could not be used as a resource

Answer:

Air masses over water are called maritime air masses, while air masses over land are called continental air masses. The borderline between two air masses is called front. Cold fronts move faster than warm fronts and cause rapid formation of xlouds ,leading to violent storms and heavy rain.

Answer:

b

Explanation:

Answer:

Explanation:

https://medlineplus.gov/viralinfections.html

Answer:

94  

Explanation:

there is 94 wolves, 8 packs, and 7 breeding pairs.

Answer:

for a virus to infect a cell, it means to spread. when it spreads, it overtakes what should be a healthy functioning cell and pollutes it.

Answer:

Stresses such as lack of nutrients, space, competition and water availability.

Explanation:

Lack of nutrients, space, competition and water availability are the stresses that the bryophyte can experience by living on land. The morphological or physiological features such as lowering transpiration rate by stomata, attain specialized structures to collect sunlight and fulfill water requirement by absorbing water from the air if no water is available in the soil etc are the features that the plant has to attain to cope with these stresses.

Answer:

I think A

Explanation:

because erosion is the washing away of soil

Erosion and deposition are the formed on this delta. Thus, the correct option is A.

Erosion is the action of the surface processes such as water flow or wind which removes the soil, rock, or dissolved materials from one location on the Earth's crust and then transports it to another location on the Earth's crust where it is deposited. The erosion is distinct from that of weathering that involves no movement.

Deposition is the laying down of the sediment carried out through the wind, flowing water, the sea or ice. Sediment on the Earth's crust can be transported as pebbles, sand and mud, or as salts dissolved in water. Salts may later be deposited by the organic activity such as sea shells or by evaporation.

Therefore, the correct option is A.

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Answer:(Radius is bone on right. Radial tuberosity is visible at upper left of radius.) Details. Identifiers. Latin, Tuberositas radii. TA98 · A02.4.05.007 · TA2 · 1216 · FMA · 23489 · Anatomical terms of bone. [edit on Wikidata]. Beneath the neck of the radius, on the medial side, is an eminence, the radial tuberosity; ... Ligaments that support the elbow joint also attach to the radial ...

True

Explanation:

MITOSIS:

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Answer:

No.

Explanation:

This is not an example of a repressed memory because these are the good memories whereas the repressed memory are bad memories of childhood. It may be infantile amnesia due to the inability of adults to bring episodic memories memories of situations or events that occurs in their childhood. The sudden re-emergence of this buried memory is the experience of the same situation or place or event that occurs in the childhood. If a person visit to a same place which he gone in their childhood so the person remember the buried memory.

Answer: C. meiosis produces sex cells that are joined during sexual reproduction to produce offspring

Explanation:

Meiosis is also called as reduction division in this the parent diploid cell divides twice to produce four haploid daughter cells. The daughter cells so produce after cell division contain half the number of chromosomes then that of the parent cells. The germ cells in males and females divide twice or meiotic division occurs in them twice to produce four daughter haploid gamete cells that are sperms (male) and ovum (oocyte) (female). These male and female gametes fuse during sexual reproduction. The sperm fertilizes an ovum to produce zygote.

Answer:

c

Explanation:

Answer: 1 Phylum.

2 Order.

3 Class.

4 Family.

5 Genus.

6 Species.

Hope this helps. Can u give me brainliest

Explanation:

Answer:

Oxygen must be diluted because it is a highly combustible gas

Explanation:

Oxygen will burn without nitrogen in our atmosphere

Answer:

Human Immunodeficiency viruses

HIV Overview

HIV (human immunodeficiency virus) is a virus that attacks the body’s immune system. If HIV is not treated, it can lead to AIDS (acquired immunodeficiency syndrome).

There is currently no effective cure. Once people get HIV, they have it for life.

But with proper medical care, HIV can be controlled. People with HIV who get effective HIV treatment can live long, healthy lives and protect their partners.

History of HIV

HIV infection in humans came from a type of chimpanzee in Central Africa.

The chimpanzee version of the virus (called simian immunodeficiency virus, or SIV) was probably passed to humans when humans hunted these chimpanzees for meat and came in contact with their infected blood.

Studies show that HIV may have jumped from chimpanzees to humans as far back as the late 1800s.

Over decades, HIV slowly spread across Africa and later into other parts of the world. We know that the virus has existed in the United States since at least the mid to late 1970s.

To learn more about the history of HIV in the United States and CDC’s response to the epidemic, see CDC’s HIV and AIDS Timeline.

How do I know if I have HIV?

The only way to know for sure whether you have HIV is to get tested. Knowing your HIV status helps you make healthy decisions to prevent getting or transmitting HIV.

Are there symptoms?

Graphic listing symptoms of HIV: Fever,HIV Symptoms and Testing, Chills, Rash, Night sweats, Muscle aches, Sore throat, Fatigue, Swollen lymph nodes, and Mouth ulcers.

Some people have flu-like symptoms within 2 to 4 weeks after infection (called acute HIV infection). These symptoms may last for a few days or several weeks. Possible symptoms include

Fever,

Chills,

Rash,

Night sweats,

Muscle aches,

Sore throat,

Fatigue,

Swollen lymph nodes, and

Mouth ulcers.

But some people may not feel sick during acute HIV infection. These symptoms don’t mean you have HIV. Other illnesses can cause these same symptoms.

See a health care provider if you have these symptoms and think you may have been exposed to HIV. Getting tested for HIV is the only way to know for sure.

What are the stages of HIV?

When people with HIV don’t get treatment, they typically progress through three stages. But HIV medicine can slow or prevent progression of the disease. With the advancements in treatment, progression to Stage 3 is less common today than in the early days of HIV.

Stage 1: Acute HIV Infection

Stage 1: Acute HIV Infection

People have a large amount of HIV in their blood. They are very contagious.

Some people have flu-like symptoms. This is the body’s natural response to infection.

But some people may not feel sick right away or at all.

If you have flu-like symptoms and think you may have been exposed to HIV, seek medical care and ask for a test to diagnose acute infection.

Only antigen/antibody tests or nucleic acid tests (NATs) can diagnose acute infection.

Stage 2: Chronic HIV Infection

Stage 2: Chronic HIV Infection

This stage is also called asymptomatic HIV infection or clinical latency.

HIV is still active but reproduces at very low levels.

People may not have any symptoms or get sick during this phase.

Without taking HIV medicine, this period may last a decade or longer, but some may progress faster.

People can transmit HIV in this phase.

At the end of this phase, the amount of HIV in the blood (called viral load) goes up and the CD4 cell count goes down. The person may have symptoms as the virus levels increase in the body, and the person moves into Stage 3.

People who take HIV medicine as prescribed may never move into Stage 3.

Stage 3: Acquired Immunodeficiency Syndrome (AIDS)

Stage 3: Acquired Immunodeficiency Syndrome (AIDS)

People with AIDS have such badly damaged immune systems that they get an increasing number of severe illnesses, called opportunistic infections.

People receive an AIDS diagnosis when their CD4 cell count drops below 200 cells/mm, or if they develop certain opportunistic infections.

People with AIDS can have a high viral load and be very infectious.

Without treatment, people with AIDS typically survive about three years.

Answer:

An invasive species is an introduced organism that negatively alters its new environment. Although their spread can have beneficial aspects, invasive species adversely affect the invaded habitats and bioregions, causing ecological, environmental, and/or economic damage.

Answer:

ATGCTA

Explanation:

Hello There!

Remember

These are the complementary bases

Thymine - adenine

adenine = thymine

Guanine - cytosine

cytosine - guanine

So the sequence of the complementary base pairs would be

ATGCTA

Answer:

Disease

Explanation:

In Ecology, certain factors that affect the size of a population can either be dependent on size or not. Density-dependent factors are those factors that affect population of organisms in dependence of how dense the population is. Examples of these density dependent factors are diseases, predation etc.

For example, a certain disease will spread faster among a population of organisms whose size is dense but slower in a scarcely densed population. Hence, disease as a factor is dependent on population size. Note that; Drought, Climate, and Natural Disasters will wipe out a population irrespective of its size.

Answer:

Disease

Explanation:

Answer:

All of the above!

Explanation:

I'm just sure it's that.

Answer:

The answer is all of the above

Explanation:

Both plant and animal cells have a cell membrane.