7.6 Carbon Dioxide In The Atmosphere

Question 1

Name 2 ways animals put carbon back into the atmosphere

Answer 1

• respiration

* decay

Question 2

Name the 5 main subjects in the carbon cycle

Answer 2

• the atmosphere
• plants
• animals
• dead organisms
• fossil fuels

Question 3

How does carbon go into fossil fuels in the cycle?

Answer 3

Burial and sedimentation of dead organisms

Question 4

Which two subjects in the carbon cycle produce carbon through respiration?

Answer 4

Animals and plants

Question 5

Name 3 ways carbon re enters the atmosphere in the cycle

Answer 5

• respiration from plants and animals
• decomposition of dead organisms
• combustion of fossil fuels

Question 6

How does carbon get into the animals?

Answer 6

They eat the plants that contain carbon from photosynthesis

Question 7

Name 2 processes that remove carbon from the atmosphere

Answer 7

• photosynthesis

* dissolved in oceans

Question 8

Why have the carbon dioxide levels in the atmosphere remained the same for the past 200 million years?

Answer 8

The various natural processes that move carbon dioxide into and out of the atmosphere had achieved a balance