Carbon cycle

Front

What is the carbon cycle?

Back

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

Front

What role do plants play in the carbon cycle?

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Plants absorb carbon dioxide (CO2) from the atmosphere during photosynthesis, converting it into organic matter and releasing oxygen.

Front

What is photosynthesis?

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Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen.

Front

How does deforestation affect the carbon cycle?

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Deforestation leads to an increase in atmospheric CO2 levels because fewer trees are available to absorb CO2 during photosynthesis.

Front

What is a greenhouse gas?

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A greenhouse gas is a gas that traps heat in the atmosphere, contributing to the greenhouse effect. Examples include carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).

Front

What is the impact of increased CO2 levels on climate?

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Increased CO2 levels can lead to global warming by trapping more heat in the atmosphere, which can result in climate change.

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What process removes carbon from the atmosphere?

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Photosynthesis removes carbon from the atmosphere by converting CO2 into organic matter.

Front

What is the role of decomposition in the carbon cycle?

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Decomposition is the process by which dead organic matter is broken down by microorganisms, releasing carbon back into the atmosphere as CO2.

Front

What is combustion?

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Combustion is a chemical reaction that occurs when a substance reacts with oxygen, producing heat and light, and releasing CO2 and other gases.

Front

What is limestone and how is it related to the carbon cycle?

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Limestone is a sedimentary rock formed from the shells of dead sea organisms, which contain calcium carbonate (CaCO3), a significant carbon reservoir.