When a glacier retreats, it leaves barren rock, no soil or plants. What is this an example of?A. Primary successionB. Secondary successionC. BothD. re-introduction

Forces that are equal in strength but opposite in direction are a.) balanced b.) unbalanced c.) always result in motion d.) do not exist

Cells are adapted to preform specific functions. which of the following terms refers to this capability?

The hardy-weinberg principle is that genetic frequencies in a population? will remain stable from generation to generation will always be changing will not be affected by environmental changes are always in a 3: 1 ratio