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

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

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What happens to carbon dioxide levels if plant populations decrease?

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If the plant population decreases, the amount of carbon dioxide in the atmosphere would increase.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

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What are fossil fuels?

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Fossil fuels are natural substances formed from the remains of ancient organisms that have been buried and subjected to heat and pressure over millions of years. They include coal, oil, and natural gas.

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What is a carbon sink?

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A carbon sink is a natural or artificial reservoir that accumulates and stores carbon-containing chemical compounds for an indefinite period. Examples include forests, oceans, and soil.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

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Which major carbon sink is formed from calcium carbonate?

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Calcium carbonate is a major carbon sink found in oceans, where it forms shells and skeletons of marine organisms, contributing to the carbon storage in the ocean.

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NGSS.HS-ESS2-6

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How do humans return carbon to the atmosphere?

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Humans return carbon to the atmosphere primarily through cellular respiration and the burning of fossil fuels.

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NGSS.MS-ESS3-4

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What is photosynthesis?

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Photosynthesis is the process by which green plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen using sunlight.

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NGSS.MS-LS1-6

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What role do decomposers play in the carbon cycle?

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

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NGSS.MS-LS2-3

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What happens to carbon during a forest fire?

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During a forest fire, carbon stored in trees and vegetation is released into the atmosphere as carbon dioxide.

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What is cellular respiration?

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Cellular respiration is the process by which cells convert glucose and oxygen into energy, releasing carbon dioxide and water as byproducts.

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NGSS.MS-LS1-3

NGSS.MS-LS2-3