Page 171 - Science Course 3 (Book 1)

Traits: Adaptations Mo4-L6a: What is Variation in Adaptation?
Lesson 6

natural selection
the process by which organisms with variations that
In this topic, you will learn the following help them survive in their environment live longer,
lessons: compete better, and reproduce more than those don’t
have variation.

Mo.4–L6a: What is Variation in Adaptation?
Mo.4–L6b: What are the Types of Adaptation?

Mo4-L6a What is Variation in Adaptation?

KEY CONCEPTS:
1. How do mutations cause variations?
2. How does natural selection lead to adaptations in
species?

Vocabulary A-Z

Let us learn some vocabulary
Let’s Begin

variation
a slight difference in an inherited trait among What is Adaptation?
individual members of a species.
Slight differences in inherited traits among individual
members of a species are variations.

Variations occur through mutations.

adaptation
an inherited trait that increases an organisms’
chance of surviving and reproducing in a particular
environment.

An adaptation is an inherited trait that helps a
species survive in its environment.

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