Ecosystems continually change over time . Chapter 3 – Science 10. Ecosystems continually change. 3.1 How Changes Occur Naturally in Ecosystems 3.2 How Humans I nfluence E cosystems 3.3 How Introduced Species Affect Ecosystems. Natural Selection.
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Chapter 3 – Science 10
to spawn because it cannot swim to the correct location.
A salmon with a large tail may be able to swim faster and farther.
mountain pine beetle, actually play a role in the
renewal of the forest.
Mountain pine beetle.