What are the two gases that animals exchange with their surroundings? A. oxygen and nitrogen B. nitrogen and helium C. hydrogen and carbon dioxide D. carbon dioxide and oxygen

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asked Jul 21, 2019 47.9k views

1 vote

What are the two gases that animals exchange with their surroundings?

A. oxygen and nitrogen

B. nitrogen and helium

C. hydrogen and carbon dioxide

D. carbon dioxide and oxygen

Chemistry
middle-school

NinjaBoy asked

by NinjaBoy

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2 Answers

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A. oxygen and nitrogen

Yauser answered Jul 22, 2019

by Yauser

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0 votes

d
we breathe in oxygen

Radtek answered Jul 25, 2019

by Radtek

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