Biological Adaptations 8-2.1

MAIN IDEA Populations in a particular environment that are better adapted to living conditions in that environment, are able to meet their survival needs, are more likely to survive and reproduce offspring with those traits

Variations variations There are _______________among species of similar populations

What are several adaptations that enhance this organisms survival in it’s current environment?

What are several adaptations that enhance this organisms survival in it’s current environment?

What are several adaptations that enhance this organisms survival in it’s current environment?

Mimicry

What do you see? How does this happen?

What adaptation would a particular organism need to survive in 1985 compared to 2002?

Natural Selection: Cause and Effect Certain snails that live in woods and in grasses are eaten by birds. The snails that live in grasses are yellow. The snails that live on the woodland floor are dark colored. Explain how the snails have become adapted to their environments through natural selection.

Does Natural Selection Occur on a Microscopic Level?

Antibiotic Resistance

Practice Problem

Practice Problem

Virginia opossums are commonly found in South Carolina Virginia opossums are commonly found in South Carolina. When confronted by a predator, they will collapse and lie motionless for a moment and then run off. What term best describes this defense strategy? Physical adaptation Mutation Behavioral adaptation classification

Adaptation Rap http://www.youtube.com/watch?v=YX8VQIJVpTg&feature=player_embedded