NGSS.5-LS2-1

_____________ is made from the remains of living things and weathered rocks.

• humus
• landform
• canyon
• soil

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Why is there a limited amount of energy that can be passed on to the next feeding level?

• There is never enough sunlight available. 
• Some ecosystems have limited resources. 
• Organisms use some of the energy they get from eating.
• All the energy is available to be passed on. 

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NGSS.5-LS2-1

Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

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How does the carbon in grass become part of a lion?

• The lion eats the grass
• Carbon from grass doesn't end up in a lion. 
• The carbon ends up in the lion's food chain. 
• The lion breathes in carbon given out by the plant

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Which describes a decomposer?

• an organism that eats only plants
• an organism that makes its own food
• an organism that breaks down dead matter
• an organism that recieves energy from the sun

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a _______ shows how each living thing gets food and how nutrients and energy are passed from organism to organism. 

• ecosystem
• food chain

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Which best describes how decomposers help support life in an ecosystem?

• Decomposers add nutrients to the soil.

• Decomposers provide a habitat in the ecosystem.

• Decomposers add producers to the ecosystem.

• Decomposers provide energy for consumers.

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NGSS.5-LS2-1

Where does the owl in this food web get its energy?

• rabbit, grasshopper, fox

• rabbit, mice, birds

• carrots, grass

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When a millipede breaks down dead and decaying material, it is acting as what?

• a decomposer
• an apex predator
• a producer
• prey

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NGSS.5-LS2-1

The Sun’s energy cycles through ecosystems from _____ through _____ and back into the nutrient pool through decomposers.

• producers, consumers

• consumers, producers

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