Water, Carbon and Oxygen Cycle Worksheet

Why is the cycling of water important in nature?

• It provides nutrients to organisms in both aquatic and terrestrial ecosystems

• It increases soil temperature

• It decreases plant growth

• It prevents animal respiration

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What is the significance of surface water runoff in the water cycle?

• It helps form clouds

• It moves water from land to streams, ponds, or other bodies of water

• It absorbs water into plant roots

• It causes decomposition

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NGSS.MS-ESS2-4

What type of organism most directly impacts the water cycle?

• Soil

• Consumers

• Producers

• Bacteria

If precipitation does not run off, where does it go?

• It is absorbed by roots of plants.

• It infiltrates the ground.

• It evaporates into the air.

• All of the above.

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NGSS.MS-ESS2-1

Describe transpiration in the water cycle.

• Water falling from clouds

• Cloud formation

• Evaporation from leaves of trees and plants

• Accumulation in lakes and rivers

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How do organisms contribute to the carbon cycle?

• By producing fossil fuels

• By releasing carbon dioxide through respiration

• By causing weathering

• By forming volcanoes

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Which process is represented by the equation: CO₂ + H₂O → C₆H_1₂O6 + O₂?

• Cellular respiration

• Decomposition

• Photosynthesis

• Combustion

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What role do green plants play in the carbon cycle?

• Release carbon dioxide

• Use carbon dioxide for photosynthesis

• Produce fossil fuels

• Cause weathering

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Which one of the following is NOT a negative human impact on the carbon cycle?

• Deforestation

• Burning fossil fuels for electricity

• Emissions from cars

• Dumping litter in the ocean

What is the waste product of photosynthesis?

• Water

• Carbon dioxide

• Oxygen

• Glucose

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NGSS.MS-LS2-3

NGSS.MS-LS1-6