3.1 How Changes Occur Naturally in Ecosystems . By the end of section 3.1 you should be able to understand the following: Over time, and many generations, organisms change along with the biotic and abiotic factors in their environments through the process of natural selection .
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Life Without People
- Most insects are helpful, but when normal conditions change, infestations can occur.
- Example: Mountain Pine Beetle:
Usually it is not a problem…it helps remove old trees, but….
Pine beetle has