Chapter 4 Miller and Levine Ecosystem

During photosynthesis, plants give off

• carbon dioxide

• water vapor

• nitrogen

• oxygen

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During cellular respiration, organisms give off

• nitrogen

• oxygen

• carbon dioxide

• water vapor

What is the source of energy for most plants?

• sunlight

• clouds

• water

• animals

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The shortest food chains consist of

• a consumer and a decomposer

• two producers

• two consumers

• a producer and a consumer

Which describes both a food chain and a food web?

• both contain only consumers

• both begin with a producer

• both contain multiple ways that energy flows

• both must include a carnivore

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The relationship between an owl and a mouse is an example of

• competition

• symbiosis

• predator and prey

• producer and consumer

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Which event would cause an ecosystem to change quickly?

• a climate change

• an earthquake

• a lake drying up

• a rock becoming soil

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Nonnative animal populations can grow rapidly in a new ecosystem because

• predators in the ecosystem are not used to hunting them

• they have no competition for resources in the ecosystem

• nonnative species are always at the top of the food chain

• they are producers

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Which of the following is not an environmental change caused by humans?

• farm

• pollution

• hunting

• beaver dam

The process in which plants make a sugar called glucose is called

• cellular respiration

• competition

• photosynthesis

• conservation

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