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polet [3.4K]
3 years ago
11

PLEASE HELP!!! WILL MARK BRAINLIST!!!!

Biology
2 answers:
bezimeni [28]3 years ago
8 0

Answer:

it may be D. But, im not 100% sure. I hope this helped a little

Crazy boy [7]3 years ago
7 0

Answer: C

Explanation:

internal: Internal Stimulus.  An Internal Stimulus is a stimulus that comes from. inside an organism.  Examples:  You have an infection so you run a fever.

external: External Stimulus.  An External Stimulus is a stimulus that comes from. outside an organism.  Examples:  You feel cold so you put on a jacket.

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Please answer correctly. I really need this. Its not a joke.
Kruka [31]

Answer: Steep, high velocity, no silting. The high water speed picks up silt from the bottom instead of letting it settle to the bottom. When the land gets level like often happens at the mouth of rivers where the water spreads out and slows down, silt settles to the bottom and you could get a wide, shallow delta.

(Put in own words this is from online hope it helps)

8 0
3 years ago
Coaches will often urge athletes to exercise when they have a cold or other infection. What is the immunological reasoning behin
damaskus [11]

Exercise is the primary advice the coaches give to the athletes if they get a cold or any other infection. The main reason behind this advice is the fact that exercising strengthens the immunity of a person. When a person has an infection, the strengthening of the immune system will help his body to efficiently fight against the infectious pathogens. The blood circulation is increased which is involved in the enhancement of the acute immunity of the person.

3 0
3 years ago
What are the roles of covalent bonds and hydrogen bonds in the structure of DNA?
Vinil7 [7]
For the answer to the question above,
 <span>DNA is made up of two nucleotide strands. The nucleotides are connected together by covalent bonds within each strand. The sugar of one nucleotide forms a covalent bond with the phosphate group of another. The two strands themselves are connected by hydrogen bonds. The hydrogen bonds are found between the bases of the two strands of nucleotides. Adenine forms hydrogen bonds with thymine whereas guanine forms hydrogen bonds with cytosine. This is called complementary base pairing</span>
6 0
3 years ago
3. If a rock was determined to be around 3.9 billion years old how much Potassium 40 would be left in that rock sample?
son4ous [18]

Answer:

What percent of potassium-40 remains undecayed in a rock that is 3.9 billion years old? The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.

]

Explanation:

5 0
3 years ago
I need to know what this is pls help me
mr Goodwill [35]

Answer:

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7 0
3 years ago
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