The Carbon Cycle

Front

What is the carbon cycle?

Back

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

Front

What role do plants and algae play in the carbon cycle?

Back

Plants and algae use carbon dioxide from the atmosphere during photosynthesis to produce glucose and oxygen, thus playing a crucial role in the carbon cycle.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose, using carbon dioxide and water.

Front

How long does it take for once-living matter to transform into fossil fuels?

Back

It takes millions of years for once-living matter to transform into fossil fuels.

Front

What happens to carbon when fossil fuels are burned?

Back

When fossil fuels are burned, most of the carbon quickly enters the atmosphere as carbon dioxide.

Front

What is limestone and how is it formed?

Back

Limestone is a type of sedimentary rock formed from the shells and skeletal remains of dead sea organisms, which accumulate over time.

Front

What is the significance of carbon dioxide in the atmosphere?

Back

Carbon dioxide is a greenhouse gas that traps heat in the atmosphere, contributing to the greenhouse effect and climate change.

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 back into the atmosphere.

Front

What is the role of decomposers in the carbon cycle?

Back

Decomposers break down dead organic matter, returning carbon to the soil and atmosphere, thus playing a vital role in recycling nutrients.

Front

What is combustion?

Back

Combustion is a chemical reaction that occurs when a substance reacts with oxygen, producing heat and light, and often resulting in the release of carbon dioxide.