How are constructive and destructive forces different?

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

Drag each tile to the correct location. match each trait that an organism displays to a reproductive strategy.

What will happen if two of the base pairs of the stand of the dna are switched