Ecology - carbon cycle

Question 1

what is the carbon cycle?

Answer 1

the carbon cycle is the natural process by which carbon atoms are continuously exchanged among the Earth’s atmosphere, oceans, soil, and living organisms

Question 2

name the key components.

Answer 2

• photosynthesis
• respiration
• decomposition
• combustion
• ocean uptake and release

Question 3

what role does photosynthesis play in the carbon cycle?

Answer 3

photosynthesis is the process where plants, algae, and some bacteria absorb carbon dioxide (CO₂) from the atmosphere and convert it into organic matter (like sugars) using sunlight

Question 4

how does respiration contribute to the carbon cycle?

Answer 4

respiration is the process by which organisms (including plants and animals) break down sugars to produce energy, releasing CO₂ back into the atmosphere as a byproduct

Question 5

what happens during decomposition in the carbon cycle?

Answer 5

decomposition is the breakdown of dead organisms by decomposers (like bacteria and fungi), which releases stored carbon back into the soil or atmosphere as CO₂

Question 6

how does combustion affect the carbon cycle?

Answer 6

combustion, which involves burning fossil fuels and biomass, releases stored carbon from these materials into the atmosphere in the form of CO₂

Question 7

what is the role of the oceans in the carbon cycle?

Answer 7

oceans absorb CO₂ from the atmosphere and, through various chemical and biological processes, can store or release carbon, acting as a major carbon sink