Unit 4 Science Review

In this food web, from where does the frog get matter?

• from the snail

• from the grasshopper

• from the grass

• from the fish

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NGSS.MS-LS2-3

Which kind of diagram shows how much energy passes along as one organism consumes another?

• food chain

• food web

• energy pyramid

• decomposition

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NGSS.MS-LS1-6

Different animals have different needs. For example, some animals can live close together in communities, but others require a lot of space. The table shows the number of individuals of four different animals that can be supported by 25,000 acres of habitat. Which type of animal would you expect to disappear first if the habitat were destroyed?

• black bear

• bobcat

• fox

• deer

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This picture shows a food chain that can be found in a prairie. At which level in the food chain is the most energy available?

• snake

• frog

• cricket

• plant

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Sasha made a model of a food chain. The living things in her food chain were a cricket, a frog, a snake, and a hawk. Which is missing from the model of Sasha’s food chain?

• producer

• prey

• food source

• consumer

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NGSS.MS-LS2-3

Carrotwood is a fast-growing landscape tree. Today, this tree is found in a variety of habitats, including dunes, coastal areas, freshwater marshes, and riverbanks. It crowds out native plants and competes for light and other resources. Which term describes the carrotwood species?

• native

• invasive

• migrant

• predatory

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NGSS.MS-LS2-2

The picture shows a beaver building a dam. Which animal is most likely to be harmed when a beaver builds a dam?

• a fish that swims in ponds

• a plant that grows in water

• a bird that builds nests in trees

• an insect that lays eggs on flowers

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Which is one example of a way that living things can change an ecosystem?

• A fire sweeps through a forest

• Deer trails on steep slope increase erosion

• A flood takes place when the water in a river rises

• Too much dry weather causes a shortage in water

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NGSS.MS-LS2-4

The Florida panther used to live all over the southeastern United States. Today only about 100 panthers still live in the wild. The panthers live in about 5 percent of the area they used to. At the same time, the human population of Florida has greatly increased. Which statement explains the changes in the panther ecosystem?

• Panthers adapted to live in the same habitat as the humans.

• The ecosystem no longer contains what the panthers need for survival.

• People built houses and brought food to the panthers, which has helped the panthers to survive.

• Panthers are a newly introduced species to Florida, and because they have no natural predators they are damaging the ecosystem.

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NGSS.MS-LS2-4

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NGSS.MS-ESS3-4

What does a food web show?

• what food organisms eat

• why organisms find food

• how predators catch prey

• when organisms seek food

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