Counting the rings on a tree will always tell you the exact number of years it has been alive.
a. true
b. false

What is the function of nucleic acids

Afamily has a y-linked disease that affects the father. what is the chance of a male offspring inheriting the same disease? oa. 100% ob. 50% oc. 25% d. 0%

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring