Question

1.As food molecules are broken down during __________, carbon is released back into the atmosphere as carbon dioxide.

A. breathing
B. the nitrogen cycle
C. the water cycle
D. cellular respiration


2.Carbon enters an ecosystem when ________.
A. water cools in the atmosphere.
B. plants take in carbon dioxide for photosynthesis.
C. plants release carbon dioxide.
D. carbon is released during cellular respiration.

3.Grass is an example of a
A. Photosynthesis
B. Producer
C. Consumer
D. Ecosystem

Answer 1

D
B
B

This is elementary science. jeez

Answer 2

D
B
B

o.e

Answer 3

waaa?