Carbon Cycle

Question 1

Decomposition

Answer 1

organic material breaks down, returning organic carbon to the soil

Question 2

combustion

Answer 2

burning fossil fuels and other organic materials

Question 3

cellular respiration

Answer 3

living organisms using O2 and food to produce CO2 and energy

Question 4

photosynthesis

Answer 4

plants using CO2 and sunlight energy to produce O2 and food

Question 5

erosion

Answer 5

breaking down and transporting solid materials