The Carbon Cycle

Question 0

In the carbon cycle, what adds carbon dioxide and removes oxygen?

Answer 0

Respiration, combustion, decay of plants and animals

Question 1

Why is the amount of carbon dioxide in the atmosphere important?

Answer 1

Effects life on earth - greenhouse effect

Question 2

In the carbon cycle, what does photosynthesis do?

Answer 2

Removes CO2 and adds O2

Question 3

Why has the balance of the carbon cycle been upset?

Answer 3

Humans have changed the balance

Question 4

How does increased population alter CO2 in atmosphere?

Answer 4

Respiration
Use more energy, especially as lifestyle improves - burn more fossil fuels
More houses and food - deforestation, less O2 producing plants