Carbon Cycle Practice

Front

What is the carbon cycle?

Back

The carbon cycle is the process by which carbon is exchanged between the atmosphere, land, water, and living organisms. It involves processes such as photosynthesis, respiration, decomposition, and combustion.

Front

What process is represented by the label '4' in the carbon cycle diagram?

Back

Decomposition.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.

Front

What process is represented by the label '2' in the carbon cycle diagram?

Back

Photosynthesis.

Front

What is respiration in the context of the carbon cycle?

Back

Respiration is the process by which living organisms convert glucose and oxygen into energy, releasing carbon dioxide and water as byproducts.

Front

What process is represented by the label '3' in the carbon cycle diagram?

Back

Respiration.

Front

What are fossil fuels?

Back

Fossil fuels are natural substances formed from the remains of dead plants and animals that have been subjected to heat and pressure over millions of years, resulting in coal, oil, and natural gas.

Front

What is decomposition?

Back

Decomposition is the process by which dead organic matter is broken down by microorganisms, returning nutrients to the soil and releasing carbon back into the atmosphere.

Front

What is combustion?

Back

Combustion is a chemical process in which a substance reacts rapidly with oxygen, producing heat and light, and releasing carbon dioxide and water.

Front

How does carbon enter the atmosphere?

Back

Carbon enters the atmosphere primarily through respiration, combustion of fossil fuels, and decomposition of organic matter.