Carbon Cycle

What is the process called when matter is reused and recycled in an ecosystem?

• Photosynthesis

• Respiration

• Nutrient cycling

• Decomposition

Why is carbon essential for all life on Earth?

• It is a primary component of water

• It is used to make all organic molecules

• It helps regulate atmospheric temperature

• It is the main component of the Earth's crust

Which two processes are primarily responsible for the exchange of carbon dioxide between plants and the atmosphere?

• Decomposition and combustion

• Photosynthesis and respiration

• Extraction and fossil fuel formation

• Evaporation and condensation

What is a significant consequence of burning fossil fuels in relation to the carbon cycle?

• It decreases the amount of carbon stored in the Earth

• It reduces the need for photosynthesis

• It increases carbon dioxide levels in the atmosphere

• It accelerates the formation of new fossil fuels