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!!!
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 :)
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
yeah your right and here is the answer for the other two
18.D
19.D
^ 100% correct
People are animals. We're mammals.
are these right
the practice I have has 19 questions
Stanley Yelnats Is Right 100%!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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.