NGSS.5-LS2-1

An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:

• Predator
• Autotroph
• Producer
• Decomposer

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NGSS.5-LS2-1

An organism that lives by breaking apart dead organic matter into simpler parts is...

• scavenger
• consumer
• decomposer
• carnivore

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NGSS.5-LS2-1

In the energy pyramid here, which organisms have the most energy available?

• Producers
• Carnivores
• Herbivores
• Top Predator

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How do decomposers help other living things in ecosystems?

• They release oxygen into the atmosphere
• They turn sunlight into energy
• They release matter and nutrients back into the soil
• They get rid of dead animals so they don't smell bad

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NGSS.5-LS2-1

What is a decomposer?

• An organism that eats meat.

• An organism that eats plants.

• An organism that eats dead things.

• An organism that makes its own food.

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Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

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The study of ecosystems.

• herbivore

• biotic

• ecology

• abiotic

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Bacteria in the intestines of cows gain nutrients and aid in the cow's' digestion

• commensalism

• mutualism

• parasitism

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A gardener wants to add humus to his soil because it contains a lot of nutrients and helps retain water. What does humus form from?

• Sand

• Rocks and minerals

• Decayed animals and plants

• Volcanic lava

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How is carbon recycled?

• The carbon cycle

• At the recycle plant

• It can't be recycled

• Through water

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