Topic 4: Lesson 3 & 4

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10 questions
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10

When organisms in an ecosystem need the same resources, what occurs?

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10

If an ecosystem is unchanging, it is _______________.

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10

What is it called when something moves through a series of steps that repeat?

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10

What is the order of the food chain? List in order of bottom of the chain to the top of the chain.

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10

Which statement best explains what happens to the ray population when the shark numbers fall?

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10

Which animal pair includes two competitors?

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10

Which of these is NOT a characteristic of a healthy ecosystem?

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10

Organisms store very little energy from the food they eat.

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10

Organisms can carry on life processes without every recharging their energy.

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10

The first step in the cycle of matter happens when ________________ take in matter from the air, soil, and water.