Page 13 - Science Course 2 (Book 1)

Mo1-L1b: How Do Animals Adapt To Their Environment?

An exoskeleton is a thick, hard outer covering. • For example, most animals that live in water
Shrimp have exoskeletons. release large numbers of eggs or sperm because a
water environment doesn’t provide much protection
for developing young.

An endoskeleton is an internal
rigid framework that supports
some animals. Humans have
endoskeletons.
Key Concept
How Do Animals Adapt To Their Environment?

How are animals adapted to their environments?

• Instinct and the ability to learn behaviors are
examples of behavioral adaptations.

• For example, many tropical birds instinctively
migrate when the number of daylight hours changes.

Young songbirds SUMMARY
learn how to sing their How Do Animals Adapt To Their Environment?
songs by listening to
their parents. Structural, behavioral, and functional
adaptations help animals survive.

• Animal species have functional adaptations, which
involve internal body systems.

• Some of these adaptations enable animals to
reproduce successfully.

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