Carbon Cycle Virtual Fieldtrip Questions

In order to get energy, organisms such as trees must undergo a process called:

• emissions

• photosynthesis

• evaporation

• transpiration

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Select all that apply. A plant’s leaves are important in the carbon cycle because they

• produce sugar as food.

• absorb water from the soil.

• release carbon compounds into the soil.

• absorb CO₂ emissions from the air and release oxygen.

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Where do the carbon compounds that are not stored in plants go?

• They are released into the soil through a plant’s roots.

• They are eaten by primary consumers.

• Nowhere; all the carbon compounds are stored in the plants.

• They are released into the atmosphere by the leaves.

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When fossil fuels are burned, they release carbon dioxide and other greenhouse gases into the atmosphere. Why is this bad for the Earth?

• Carbon dioxide and greenhouse gases do not allow plants to grow.

• If there is too much carbon dioxide in the air, it stays there, and the Earth’s temperature rises.

• If there is too much carbon dioxide in the air, it stays there, and the Earth’s temperature decreases.

• Burning fossil fuels is not bad for the Earth.

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What role do humans play in the carbon cycle?

• Humans take in oxygen and release carbon dioxide back into the air.

• Humans take in carbon dioxide and release oxygen back into the air.

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Why is the sun important in the carbon cycle?

• The sun provides the light energy plants need to perform photosynthesis.

• The sun provides the hydrogen plants need to perform photosynthesis.

• The sun provides the carbon dioxide plants need to perform photosynthesis.

• The sun is not an important part of the carbon cycle.

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Which type of organisms play an important role in the carbon cycle because they break down decaying plants and animals, allowing nutrients to be absorbed back into the soil?

• Producers

• Primary consumers

• Decomposers

• Secondary consumers

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Select all that apply. What are TWO ways that animals directly add carbon compounds to the soil?

• by eating producers

• by decomposing

• by breathing out

• by producing waste

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Select all that apply. How can carbon atoms be removed from the air?

• They can diffuse into surface oceans.

• They can be absorbed by land plants.

• They can be absorbed by human skin.

• They can fall to Earth as drops of rain.

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Select all that apply. What is the relationship between plants and animals in the carbon cycle?

• Plants produce oxygen, which animals need to survive.

• Animals produce carbon dioxide, which plants need to make food.

• Plants produce carbon dioxide, which animals need to survive.

• Animals produce oxygen, which plants need to make food.

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