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jekas [21]
3 years ago
6

(c)

Biology
1 answer:
Gwar [14]3 years ago
3 0

Answer:

villi is used and is very imp as it has structure like finger type which help for increase in surface area for more absorption and less wastage of water/minerals

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Indicate whether the sentence or statement is true or false.
astra-53 [7]

Answer: No

Explanation: if a nucleic acid contains uracil then it is not DNA it's an RNA. Uracil is the basic nitrogenous base of RNA. DNA does not have Uracil in its structure. It contains thiamine instead of Uracil. So the answer is NO.

3 0
3 years ago
Why does gees fly together in a V formation
Elina [12.6K]

Explanation: One of the highest probabilities is because of the bird in the front (the one in the point of the v) takes the command in leading to others in the flock to there location which explains for that as in there is no new members of there flock doing so.

Another reason could be is air resistances and helps the flock fly.

6 0
3 years ago
Estimate how many arteries branch off the aorta given that arteries have a diameter of 0.4 cm and a flow speed of 45 cm/s.
rosijanka [135]

Answer:

Approximately 25 arteries would branch off

Explanation:

Aorta has a diameter of 2 cm, so area is pi x 1^2 = 3.142

In case of the artery, pi x 0.2^2 = 0.126

So dividing total area of aorta by total area of one artery, we get 3.142/0.126 = 25.021

Hence, about 25 arteries will be needed to carry the amount of blood that flows in the aorta vessel.

7 0
4 years ago
Heyyyy! I need some help. Could ya lend me a MOUSE?? Haha, get it? Cause we can't see each other, then at least you can use the
dlinn [17]

Answer:

The answer would be C

Explanation:

The Matter is converted to energy and carbon molecules

(I know because I passed science xD)

3 0
4 years ago
A change in allele frequencies in a set of organisms over time is called __________.
son4ous [18]
Microevolution

Microevolution is the change in the allele frequencies within a set of organisms (population) over time primarily due to four processes namely, mutation, natural and artificial selection, gene flow, and genetic drift. 

The term "microevolution" is coined to differentiate it from "macroevolution," which occurs over much longer periods of time and results in greater differences in the characteristics of the organisms in the population. 
6 0
3 years ago
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