who is nicole snooki polizzi dating - Tree ring dating lesson

Have you ever counted the rings on a stump to find out how old a tree was?

As a tree grows, it adds a new ring around its waistline each year.

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Students will learn how to determine age and climate of trees and develop a greater understanding of tree- ring dating principles using these activities.

See also Mitosis and Meiosis for activities, labs, and links as well as How Cells Divide: Mitsis and Meiosis for a slide show from NOVA's "18 Ways to Make a Baby." Phases of Meiosis A worksheet complete with diagrams from the Biology Corner.