Carbon Cycle

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What is the carbon cycle?

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

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Why do trees help reduce global warming?

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Trees absorb carbon dioxide (CO2) from the atmosphere during photosynthesis, which helps to lower the concentration of this greenhouse gas and mitigate global warming.

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What is the biosphere?

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The biosphere is the global sum of all ecosystems, where all life on Earth exists. It includes land, water, and the atmosphere, and is a major reservoir of carbon.

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NGSS.MS-LS2-4

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What is the lithosphere?

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The lithosphere is the rigid outer layer of the Earth, consisting of soil, rocks, and fossil fuels. It is a significant reservoir of carbon.

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What role do animals play in the carbon cycle?

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Animals release carbon dioxide (CO2) into the atmosphere through respiration, which plants use for photosynthesis.

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What is photosynthesis?

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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.

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NGSS.MS-LS1-6

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What is respiration in the context of the carbon cycle?

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

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NGSS.MS-LS2-3

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What is decomposition?

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Decomposition is the process by which organic substances are broken down into simpler organic or inorganic matter, releasing carbon back into the atmosphere or soil.

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How does burning fossil fuels affect the carbon cycle?

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Burning fossil fuels releases stored carbon in the form of carbon dioxide (CO2) into the atmosphere, increasing greenhouse gas concentrations and contributing to global warming.

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What is the hydrosphere?

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The hydrosphere includes all the water on Earth, such as oceans, rivers, lakes, and groundwater. It plays a role in the carbon cycle by absorbing carbon dioxide from the atmosphere.

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NGSS.MS-ESS2-1

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