Explain how much the recent birds vary from the original birds after 1 million years of natural selection. How does evolution explain the changes? Use the following terms or phrases in your explanation: natural selection, random mutation Selection of favorable traits, reproduction, and genetic variation

What must be true for natural selection to heppen

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Produce proteins by following coded instructions that come from the nucleus of the cell.