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 various processes such as photosynthesis, respiration, decomposition, and combustion.

Front

How does carbon dioxide enter the ocean?

Back

Carbon dioxide from the atmosphere is absorbed directly into the surface ocean.

Front

What process do plants use to absorb carbon dioxide?

Back

Photosynthesis.

Front

What are fossil fuels?

Back

Fossil fuels are natural substances formed from the remains of ancient organisms, buried deep underground over millions of years, and include coal, oil, and natural gas.

Front

What is respiration in the context of the carbon cycle?

Back

Respiration is the process by which living organisms convert oxygen and glucose into energy, releasing carbon dioxide back into the atmosphere.

Front

What role do decomposers play in the carbon cycle?

Back

Decomposers break down dead organic matter, returning carbon to the atmosphere as carbon dioxide through the process of 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 carbon dioxide and water, releasing oxygen as a byproduct.

Front

True or False: All carbon in existence is continually recycled in the carbon cycle.

Back

True.

Front

What is the main source of carbon dioxide in the atmosphere?

Back

Burning fossil fuels, respiration of living organisms, and volcanic eruptions.

Front

How do animals contribute to the carbon cycle?

Back

Animals contribute to the carbon cycle through respiration, which releases carbon dioxide into the atmosphere.