Natural selection relies on natural variations in organisms that make them more likely to survive. Where do these natural variations come from? A. programmed genetic changes to an individual
B. specific behavioral changes taught to an individual
C. random genetic changes in an individual
D. Random behavioral changes learned by an individual

Sand spinifex grass is adapted to growing on sand dunes. it is a rapidly spreading plant and the creeping runners produce new root systems. which of these best explains the benefits of these features? a. it limits water loss through the leaves. b. it provides support by anchoring the plant. c. it protects the plant from predators. d. it allows the plant to tolerate salt. reset submit

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

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this