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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

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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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

asked
User NinjaBoy
by
7.9k points

2 Answers

4 votes

A. oxygen and nitrogen

answered
User Yauser
by
8.2k points
0 votes
d
we breathe in oxygen
answered
User Radtek
by
8.4k points
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