Asked by ASDFGHJKL.

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

Someone please help!!!

Answers

Answered by Damon
We people take in O2 and exhale CO2 (oxygen and carbon dioxide)

by the way
Luckily plants take in CO2 and make the C into plant material.
Therefore if you want less CO2, grow plants.
Answered by ASDFGHJKL.
But I was talking about animals...
Answered by Ms. Sue
People are animals. We're mammals.
Answered by :)
Here are the answers.

1.D
2.B
3.C
4.D
5.A
6.C
7.B
8.D
9.A
10.B
11.D
12.C
13.B
14.C
15.A
16.B
17.A

Your welcome :)
Answered by cottencandygirl
are these right
Answered by cottencandygirl
the practice I have has 19 questions
Answered by cottencandygirl
yeah your right and here is the answer for the other two
18.D
19.D
Answered by BabyOreo987
Im a potatooooooooooooo (i dont belong here XD) IM NOT CHEATING I DONT EVEN HAVE THESE QUESTION SO DONT SAY IM CHEATING bai bai oh and hayyyyyyyyy CottonCandy
Answered by cottencandygirl
Hahahahahaha hey man
Answered by Miracle
It is D i just took the test
Answered by Stanley Yelnats
1.D
2.B
3.C
4.D
5.A
6.C
7.B
8.D
9.A
10.B
11.D
12.C
13.B
14.C
15.A
16.B
17.A
18. D
19. D
Answered by ur mom gai
^ 100% correct
Answered by BillyJr
Stanley Yelnats Is Right 100%!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answered by Kieleanne
Thanks so much stanley!!
Answered by toby
i go to connections academy are these correct?
Answered by peanutCreator101
@:)
YOU SAVED ME
Thanks Stan I got it 100% correct
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