The Carbon Cycle

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 like photosynthesis, respiration, decomposition, and combustion.

Front

How do living organisms return carbon to the atmosphere?

Back

Living organisms return carbon to the atmosphere primarily through respiration and decomposition.

Front

What process removes carbon from the atmosphere?

Back

Photosynthesis removes carbon from the atmosphere by converting carbon dioxide into glucose using sunlight.

Front

What can happen to organisms that do not decompose?

Back

Organisms that do not decompose can be buried and eventually become fossil fuels.

Front

What has been the trend in atmospheric carbon dioxide levels since 1960?

Back

Atmospheric carbon dioxide levels have increased steadily since 1960.

Front

Which process does not produce carbon dioxide?

Back

Photosynthesis does not produce carbon dioxide; it consumes it.

Front

What role do plants play in the carbon cycle?

Back

Plants play a crucial role in the carbon cycle by absorbing carbon dioxide during photosynthesis and releasing oxygen.

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 as a byproduct.

Front

What is decomposition?

Back

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

Front

What are fossil fuels?

Back

Fossil fuels are natural substances formed from the remains of ancient organisms, primarily composed of carbon, and are used as energy sources.