Short Answer

Plant and Animal Parts
Structure and Function
Short Answer
1
Frogs have a long tongue that whips out to catch insects, and a stomach that
digests the eaten bug. Which part of the frog is an internal structure, and
which is the external structure?
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2
What purposes do fur and a beating heart provide to a mammal? Which is the
internal and which is the external structure?
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3
Describe an internal and external structure on a cactus plant.
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