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astra-53 [7]
3 years ago
8

Which of the following occurrences affects the Earth's water systems?

Biology
1 answer:
Fiesta28 [93]3 years ago
7 0

D is the correct answer

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What are the charecteristics of epihtelial tissue
ikadub [295]

Answer:

- covers and lines body surfaces

- minimal intercellular substance

- cells are densley packed together

- cells rest on basement membrane

- simple (single line of cells) and stratified (multiple layers)

- squamous (oval like shape), cuboidal (cube shape), columnar (long rectangle shape)

- vascular (tissue doesn't have its own blood supply)

Explanation:

Hope this helps!

5 0
3 years ago
Why did primates evolve?
ivolga24 [154]
<span>Humans did not evolve from apes, gorillas or chimps. We are all modern species that have followed different evolutionary paths, though humans share a common ancestor with some primates, such as the African ape. The timeline of human evolution is long and controversial, with significant gaps.</span>
4 0
3 years ago
How is nitrogen returned to the atmosphere during the nitrogen cycle? a. it is returned to the atmosphere in a process called ni
AlladinOne [14]

Nitrogen is returned to the atmosphere during the nitrogen cycle in a process referred to as denitrification.

<h3>What is denitrification?</h3>

It is a process whereby nitrogen becomes mineralized from nitrogenous compounds. In other words, it is the reduction of nitrates to produce elemental nitrogen which is returned to the atmosphere.

Denitrification is a microorganisms-driven process. The nitrates are made to pass through a series of reactions with intermediate products before finally leading to the production of elemental nitrogen.

More on the denitrification process can be found here: brainly.com/question/13624886

#SPJ4

5 0
2 years ago
Lots of points<br> match the following:
pochemuha

Answer:

1.- down syndrome

2.- Turners syndrome

3.- sickle-cell anemia

4. sickle-cell trait

5.- Klinefelter syndrome

Explanation:

3 0
2 years ago
What is spontaneous generation?
kkurt [141]

Answer:

Spontaneous generation, the hypothetical process by which living organisms develop from nonliving matter.

Explanation:

In 1668, Francesco Redi, an Italian scientist, designed a scientific experiment to test the spontaneous creation of maggots by placing fresh meat in each of two different jars. One jar was left open; the other was covered with a cloth. Days later, the open jar contained maggots, whereas the covered jar contained no maggots. He did note that maggots were found on the exterior surface of the cloth that covered the jar. Redi successfully demonstrated that the maggots came from fly eggs and thereby helped to disprove spontaneous generation.

4 0
3 years ago
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