4.1.7 carbon cycle

Question 1

how is carbon removed from the atmosphere

Answer 1

-photosynthesis (for glucose)
- produce fats and proteins

Question 2

how is carbon added into the atmosphere

Answer 2

respiration
burning of fossil fuels
decomposition

Question 3

atmospheric carbon dioxide levels are increasing because…

Answer 3

photosynthesis only takes place in light so CO2 only removed during day
respiration is carried out by all organisms all the time so CO2 is released at a consistent rate

human activities such as combustion of fossil fuels and deforestation have further increased CO2 in the air contributing to global warming