___ structures are found on the inside of living things.

• External

• Internal

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NGSS.4-LS1-1

In the aquatic biome, fish have ___ for taking in oxygen and fins for movement.

• spines

• blubber

• gills

• fur

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Whales and sea lions have a layer of ___, or fat, under their skin to keep them warm.

• gills

• fur

• blubber

• beaks

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NGSS.4-LS1-1

Which is an example of an internal adaptation?

• migration
• hibernation
• behavioral
• gills

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What are adaptations?

• traits that help an organism to survive and reproduce
• traits that help an organism hide
• traits that help an organism to seek protection
• traits that help an organism to see.

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What is the purpose of xylem in plants?

• to transport water through out the plant
• to remove water through out the plant
• to generate water through out the plant
• to give off more water through out the plant

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NGSS.MS-LS2-1

Why do birds need the adaptation of hollow bones?

• to fly
• to live
• to reproduce
• to run

What is the function (job) of fish gills?

• To absorb water from the water

• To make the fish faster

• To make the fish lighter

• To absorb oxygen from the water

What adaptation most likely helps this bird fly?

• A strong beak

• Small feet

• Hollow bones

• The color of the bird

Xylem is a plant adaptation that allows plants to transport ______________ up the stem.

• Salt

• Sugar

• Water

• Coffee

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NGSS.MS-LS2-3