B-LS2-5 Carbon Cycle

What is the effect of combustion of fossil fuels on the carbon cycle?

• It decreases greenhouse gas concentrations in the atmosphere.

• It has no effect on the carbon cycle.

• Combustion of fossil fuels releases carbon dioxide into the atmosphere, increasing greenhouse gas concentrations.

• It converts carbon dioxide into oxygen.

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How does the carbon cycle relate to ecosystems?

• The carbon cycle is essential for maintaining ecosystem balance, supporting plant growth, and regulating climate.

• The carbon cycle only affects animal populations in ecosystems.

• The carbon cycle has no significant impact on climate change.

• The carbon cycle is primarily concerned with water cycles in ecosystems.

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What is carbon sequestration?

• Carbon sequestration is the process of capturing and storing atmospheric carbon dioxide to mitigate climate change.

• Carbon sequestration is the method of increasing carbon emissions to enhance plant growth.

• Carbon sequestration refers to the release of carbon dioxide into the atmosphere to promote global warming.

• Carbon sequestration is the technique of converting carbon dioxide into oxygen through photosynthesis.

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What is respiration in the context of the carbon cycle?

• Respiration is the process by which living organisms convert glucose and oxygen into energy, releasing carbon dioxide back into the atmosphere.

• Respiration is the process of plants absorbing carbon dioxide and releasing oxygen during photosynthesis.

• Respiration is the breakdown of carbon compounds in the soil by microorganisms, releasing nutrients into the ecosystem.

• Respiration is the process of animals exhaling oxygen and inhaling carbon dioxide during their daily activities.

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How does carbon move from plants to animals?

• Carbon moves from plants to animals through the food chain when animals consume plant matter.

• Carbon is absorbed by animals directly from the air.

• Carbon moves from plants to animals through the soil.

• Carbon is transferred to animals when they drink water from plants.

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What is the carbon cycle?

• The process by which carbon atoms are recycled through the Earth's ecosystems, including the atmosphere, oceans, soil, and living organisms.

• A method of carbon capture and storage in industrial processes.

• The cycle of carbon emissions from human activities into the atmosphere.

• The process of photosynthesis in plants converting carbon dioxide into oxygen.

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What happens to carbon in decomposing organisms?

• Decomposing organisms release carbon back into the soil and atmosphere, completing the carbon cycle.

• Decomposing organisms store carbon in their bodies for future use.

• Decomposing organisms convert carbon into energy for growth.

• Decomposing organisms absorb carbon from the soil and atmosphere.

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What is the greenhouse effect?

• The greenhouse effect is the warming of the Earth's surface due to the trapping of heat by greenhouse gases like carbon dioxide.

• The greenhouse effect is the cooling of the Earth's surface due to the reflection of sunlight by clouds.

• The greenhouse effect is the process of plants absorbing carbon dioxide during photosynthesis.

• The greenhouse effect is the increase in Earth's temperature due to volcanic eruptions.

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What is the role of decomposers in the carbon cycle?

• Decomposers break down dead organic matter, returning carbon to the soil and atmosphere.

• Decomposers produce oxygen through photosynthesis.

• Decomposers consume living plants and animals for energy.

• Decomposers store carbon in their bodies for long periods.

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What role do plants play in the carbon cycle?

• Plants absorb carbon dioxide from the atmosphere during photosynthesis, converting it into organic matter.

• Plants release carbon dioxide into the atmosphere during respiration.

• Plants store carbon in their roots and do not release it back into the atmosphere.

• Plants only absorb oxygen and do not play a role in the carbon cycle.

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