2) The process that drives variation

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SPI 0807.5.2 Adaptation
Science
Notes
1) When environmental changes occur
organisms must change (adapt) by either changing
their behavior or changing their body structure
or both.
2) The process that drives variation
is called natural selection
3) Changes and variation result from
sexual reproduction (over many generations) and
changes in the environment
4) Changes and variation also result from
genetic mutations (over many generations) and
changes in the environment
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SPI 0807.5.2 Adaptation
Notes
Science

• Two types of adaptations
• Behavioral-
• Structural-

(what an organism does)
(what an organism isshape form of the body)
Look at the image of the hibernating
bear Question Is this a behavioral or structural
adaptation?
This is behavioral because it is what the animal
does.
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SPI 0807.5.2 Adaptation
Notes
Science

• Two Key Behavioral Adaptations
• Sexual Reproduction-
• Asexual Reproduction-

(requires 2 parents male female)
(requires only 1 parent)
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SPI 0807.5.2 Adaptation
Science
Question
5
SPI 0807.5.2 Adaptation
Science
Question
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SPI 0807.5.2 Adaptation
Science
Question