Test: 4th Grade Science

1.

Andy says that animals have structures that help them survive, but the skin is not one of those structures. Which of the following arguments DISPROVES Andy’s statement?

None of these arguments disprove Andy’s statement.

Armadillos, hedgehogs, and porcupines all have armor-like skin, which protects them from predators and harsh environments.

Arthropods have exoskeletons that they molt as their bodies grow.

Mollusks, like snails, have calcified shells that protect them from predators and rough seas.

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