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Artemon [7]
2 years ago
8

I need help on this one??

Biology
2 answers:
Luba_88 [7]2 years ago
6 0

Answer:

A

Explanation:

It's basically doing by its own

Misha Larkins [42]2 years ago
3 0

Answer:

A

Explanation:

Your body automatically does this to keep itself functioning.

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Give a fact about red blood cells
Novosadov [1.4K]

Answer:

Red blood cells (erythrocytes)

Red blood cells carry oxygen from your lungs to your tissues. They also bring carbon dioxide back to your lungs. Red blood cells make up almost half of your blood. The lifespan of a red blood cell is around 120 days

Explanation:

7 0
3 years ago
What is a rabbits family tree?
Marysya12 [62]

Answer:

i didnt know so i goo gled and and was suprised lol

Explanation:

Leporidae is the family of rabbits and hares, containing over 60 species of extant mammals in all. The Latin word Leporidae means "those that resemble lepus" (hare). Together with the pikas, the Leporidae constitute the mammalian order Lagomorpha.

3 0
3 years ago
A radioactive material has a half-life of 30 days. You begin with 4 grams of radioactive material.
mario62 [17]

Answer:

a. 0.5 grams b. 0.25

Explanation:

Just use the half-life formula(I linked it below)

a. 4(1/2)^90/30=1/2

b. 4(1/2)^120/30=1/4

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