Question 16 of 30
After a hurricane, a small group of seabirds flew off course and formed a new
population. Gene flow between the new population of seabirds and the
original one stopped, and the two populations evolved differently.
What process first caused the seabird populations to evolve differently?
A. Natural selection
B. Genetic drift
C. Reproductive isolation
D. Geographic isolation

Answer:

B. nitrogen-fixing

Explanation:

Nitrogen fixing bacteria are able to change pure nitrogen into ammonia compounds.

Nitrogen fixing bacteria are found in the soil close to the root of leguminous plants. They are get their own nutrition by chemosynthesis.

Answer:

Nitrogen-fixing

Explanation:

I took the quiz

Answer:

in single-celled organism,signaling allows population of cells to coordinate with one another and work like a team to accomplish tasks no single cell could carry out on its own. the study of cell signaling touches multiple biological disciplines 5 years developmental biology , neurontology, and endocrinology.

* explanation* : hope this helped you

Answer:

It has an alternating chemical phosphate and sugar backbone, making the 'sides' of the ladder. (Deoxyribose is the name of the sugar found in the backbone of DNA.) In between the two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).

Explanation:

Answer:

Instead, let's start applying what we learned so far by looking at the most common groups of molecules in food: carbohydrates, proteins and fats. These molecules are also called 'macronutrients' and are essential for us from a nutritional point of view.

Mitosis is the cell division which occurs in all types of cells in the body. This results into formation of daughter cells with same set of genetic material as the parent cell.

Mitosis is a type of cell division which occurs in all types of cells. This division is also called as Equational division as the genetic content remains constant from the parents to offspring. This process results into formation of two daughter cells which are similar to the parent cell.

In mitosis, a cell divides to form two identical daughter cells with same genetic material. It is important that the daughter cells have a copy of every chromosome in their nucleuc, so the process involves copying of the chromosomes first and then carefully separating the chromosomes copies to give each new cell a full set of genetic material.

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Answer:

I'm dead

Explanation:

Bruh you literally go to my school. I'm dying over this.

The combination which is always true of the nucleotide composition of a sample of DNA is:  [tex]A + C = G + T[/tex]

Deoxyribonucleotides is the basic unit of a deoxyribonucleic acid (DNA).

Basically, it comprises a nitrogenous base and phosphate group that are commonly known as deoxyribose sugar.

A nucleotide refer to a subunit of deoxyribonucleic acid (DNA) or ribonucleic acid (RNA) that consists of a nitrogenous base.

Hence, the nitrogenous base or nucleotide composition of a deoxyribonucleic acid (DNA) includes the following:

In conclusion, the combination which is always true of the nitrogenous base or nucleotide composition of a sample of DNA is:

               [tex]Adenine (A) + Cytosine (C) = Guanine (G) + Thymine (T)[/tex]

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Answer:

C) The brown trilobite fossils are older than the yellow shell fossils

Explanation:

Answer:

Explanation:

Land is important as it provides a suitable habitat for humans as with high population a higher land mass is needed in order to provide satisfactory living condition likewise if lower population less land mass is needed while sea breeze is needed to it ability to stabilize thermal temperature in which is needed to keep a population physiology content

Answer:

Crystal form refers to the geometric shape of mineral crystals. Crystal form is caused by the symmetrical, three-dimensional arrangement of atoms inside the mineral.

Explanation:

Answer:

2. Sarah

Explanation:

because she is stronger, she is able to pull faster and easier because of the amount of weight she can carry vs the amount of weight you can carry. Although you are the same height, she has more muscle.

Answer:

answer is 50

Explanation:

i gess on quiz and it was correct

PS: Love you babe ill see you when you get home.

A dry soil sample has a volume of 500 mL. After 400 mL of water are added to the soil, the soil becomes saturated with 150 mL of surface water left on top. The porosity of the soil is 50%. Thus, option C is correct.

Forest soil has more moisture than sandy soil therefore the types of plants that are grown in soil of forests are more qualitative and more superior than the sandy plants which are facing certain limitations and facing certain situations.

Forest soil supports plant life, but sandy soil does not support any plants. Forest soil produces more superior life and the plants life are found in the forest area and the sandy plants are lesser found in the sandy areas.

The reason for vegetation in forests is because of the supportive factors that are involved in the good plants life. The soil type that is the richest in organic material would be a dark-colored soil. Decaying matter turns brownish-black which makes this type of soil having a dark color even almost black.

Therefore, A dry soil sample has a volume of 500 mL. After 400 mL of water are added to the soil, the soil becomes saturated with 150 mL of surface water left on top. The porosity of the soil is 50%. Thus, option C is correct.

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Answer:

Hypothesis

Explanation:

This is a guess that is not that very probably correct so its just suggested, from approximating things

Answer:

CRISPR can also be used to make precise changes such as replacing faulty genes – true genome editing – but this is far more difficult. Customised Cas proteins have been created that do not cut DNA or alter it in any way, but merely turn genes on or off: CRISPRa and CRISPRi respectively.

Answer: Container P.

Explanation: All of the containers started at 30 degrees, and they all lost heat, as shown in the table. However, Container P saw the smallest decrease in temperature. This means that Container P was most effective at preventing heat transfer from the water to the environment.

Answer:

A group of monkeys may be commonly referred to as a tribe or a troop.

i think that correct?

Explanation:

Answer:

B. Physiology

Explanation:

The way in which a living organism or bodily part functions.

The branch of biology that deals with the normal functions of living organisms and their parts.

Answer:

C. Water freezes and thaws inside rock cracks, causing them to widen and then split.

Explanation:

When water gets in the crack at the bottom and freezes, frost wedging occurs.

Frost wedging happens when water gets in crack, freezes, and expands. This process breaks rocks apart. When this process is repeated, cracks in rocks get bigger and bigger (see diagram below) and may fracture, or break, the rock.

Answer:

A. 20%

Explanation:

A DNA molecule consists of four nucleotides viz: Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). According to Chargaff in his complementary base pairing rule, these nucleotides pair with one another in such a way that A bonds to T, while G bonds to C.

Based on Chargaff's rule, the amount of Adenine in the DNA is equal to the amount of Thymine while the amount of Guanine is equal to that of Cytosine i.e. A=T, G=C.

A + T + G + C = 100%

Hence, in this question, a scientist finds that 20% of the strands bases are Thymine. This means that the amount of Thymine in that DNA will also be 20%. S

Since A=T = 20% in accordance to Chargaff rule.

Answer:

Metabolism

Explanation:

Invasive species are plants, animals, or other living things that typically don't belong In that ecosystem- and their presence can cause harm to the other species within, or the environment.

Answer:

Invasive species are foreign species that are introduced to a new habitat and cause changes to the habitat.

Explanation:

Example is when the wolves were introduced to the yellowstonenational park again

Answer:

Yes. You need to go to the doctor.

Explanation:

Your foot could be doing this because the bone itself could be bruised or else it somehow got injured or is in some other type of pain.  

Answer:

The answer is F.

Explanation:

The reason why is the Mitochondria converts glucose to energy. If it were to be removed, protein production would stop, normal functions would cease, homeostasis would be off balance. also because activities going towards the Nucleus. No control center, no protein production since ribosomes are made there. Thus, destroying that cell completely.

Answer:

These are my answer choices so I guess it's an mixture, it's a mixture of filtration .. so its a mixture

Explanation:

(1) The original material was a mixture.

(2)The original material was a compound.

(3)The original material was either an element or a compound.

(4)The original material was either a mixture or a compound.

A beaker containing a substance is in the laboratory. Upon filtering, a solid is left on the filter paper. We can conclude that the original material was a mixture.

Filtering is a method for the separation of heterogeneous mixtures. A filter paper is placed in a funnel and the mixture is poured over it. The liquid passes the filter while the solid is retained. Since this was the situation of the student, we can conclude that the original material was a mixture. After the filtering, the student will have 2 homogeneous systems.

A beaker containing a substance is in the laboratory. Upon filtering, a solid is left on the filter paper. We can conclude that the original material was a mixture.

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Answer:

The real life example is like the brain to a human. It makes protiens for the cell in which amino acids are hooked together to make the proteins. It works as a packaging system.

Explanation:

Answer:

It is responsible for the things that go in and out of the cell.

Answer:

Detritivores

Explanation: Just took the test look it up if you have to, that's all I did.

Answer:

Anatomical Evidence

Explanation:

The pelvic bones in whales are a good example of evolutionary anatomical evidence shown by vestigial evolution where whales evolved from four-legged land mammals and secondarily lost their hind legs.

Answer:

Explanation:

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