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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 atmosphere, land, water, and living organisms. It involves processes such as photosynthesis, respiration, decomposition, and combustion.

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What role do plants play in the carbon cycle?

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Plants absorb carbon dioxide from the atmosphere during photosynthesis, converting it into organic matter, which is essential for their growth and for the food chain.

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What is nitrogen fixation?

Back

Nitrogen fixation is the process by which nitrogen gas (N_2) is converted into ammonia (NH_3) by certain bacteria, making nitrogen available for plants.

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What is nitrification?

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Nitrification is the process in the nitrogen cycle where ammonia (NH_3) is converted into nitrites (NO_2-) and then into nitrates (NO_3-) by bacteria.

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What is denitrification?

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Denitrification is the process by which nitrates (NO_3-) are converted back into nitrogen gas (N_2) by bacteria, returning nitrogen to the atmosphere.

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What is the significance of decomposition in the carbon cycle?

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Decomposition breaks down dead organic matter, releasing carbon back into the atmosphere as carbon dioxide and returning nutrients to the soil.

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How does deforestation affect the carbon cycle?

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Deforestation increases the amount of carbon dioxide in the atmosphere because fewer trees are available to absorb CO2 during photosynthesis.

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What is the role of bacteria in the nitrogen cycle?

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Bacteria play crucial roles in the nitrogen cycle, including nitrogen fixation, nitrification, and denitrification, facilitating the conversion of nitrogen into forms usable by plants.

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What is photosynthesis?

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Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen, playing a key role in the carbon cycle.

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What are the main components of the nitrogen cycle?

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The main components of the nitrogen cycle include nitrogen fixation, nitrification, ammonification, and denitrification.