Chapter 20 Matter and Energy in the Environment

What of the following is an example of a biotic factor?

• Sunlight

• Stream

• Tree

• Rock

What is an example of an abiotic factor?

• Cow

• Acacia Tree

• Sunlight

• Grass

What is being produced during photosynthesis?

• sugar (glucose) and oxygen

• sugar (glucose) and carbon dioxide

• glucose

• gases

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What gas is taken in during photosynthesis?

• Argon

• Nitrogen

• Oxygen

• Carbon dioxide

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Where does the energy for photosynthesis come from?

• carbon dioxide

• oxygen

• the sun

• glucose

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In what part of the cell does photosynthesis take place?

• nucleus

• chloroplast

• cytoplasm

• mitocondria

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What part of a cell does cellular respiration take place?

• nucleus

• chloroplast

• cytoplasm

• mitochondria

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In what way are photosynthesis and cellular respiration different?

• Cellular respiration stores energy, while photosynthesis releases energy

• Cellular respiration produces oxygen, while photosynthesis uses oxygen

• Photosynthesis releases energy, while cellular respiration stores energy

• Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide

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How do consumers get energy?

• Absorbing sunlight

• breaking down dead organisms

• soaking it up from the ground

• feeding on other organisms

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Decomposers are important to ecosystems because they...

• return vital nutrients to the ecosystem

• capture energy from the Sun

• are producers

• can be omnivores

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