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Roman55 [17]
4 years ago
13

What were the first organisms to appear on Earth??

Biology
1 answer:
GenaCL600 [577]4 years ago
3 0
I believe it's Archaea which is kind of like bacteria.
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Nutrients are delivered and waste products are carried away from the cells of the posterior segment of the eye by blood vessels.
kolezko [41]

Answer:

The cells on the cornea are maintained by pheripheral vessels and surrounding fluids.

Explanation:

*- The capillaries of the limbus nourish the peripheral part of the cornea.

*- Tears supply of glucose in the tear film

*- Aqueous humor nourishing the outermost layers of the cornea the endothelium being a unicellular layer

6 0
3 years ago
Buoyant force is equal to
grandymaker [24]
I believe its A. I could be incorrect though.
4 0
3 years ago
Read 2 more answers
How could you separate bits of iron from sawdust?​
Katarina [22]

Answer:

You could use a magnet to collect the iron, and then wash the sawdust off. Hope this helps :)

7 0
4 years ago
The name of the glial cell that covers the capillaries in the brain with its perivascular feet, helping to form the blood-brain
blsea [12.9K]

Answer:

Astrocytes

Explanation:

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4 0
3 years ago
Usually the body needs to excrete excess acid. sometimes, however, the body is in alkalosis. in the collecting duct, there are s
nadezda [96]

The type b intercalated cells will reduce the amount of bicarbonate ion secreted and the amount of hydrogen ions excreted by the body in order to deal with alkalosis.

<h3>What is alkalosis?</h3>

Alkalosis is a condition in which excess alkali is present in the blood.

Alkalosis occurs when the body exceeds excess alkali in from the body.

Therefore, the type b intercalated cells will reduce the amount of bicarbonate ions secreted and the amount of hydrogen ions excreted by the body in order to deal with alkalosis.

Learn more about alkalosis at: brainly.com/question/14971300

#SPJ1

7 0
2 years ago
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