Which of the following evolutionary forces can introduce new genetic variation into a population?
natural selection and genetic drift
mutation and gene flow
natural selection and nonrandom mating
mutation and genetic drift

In general, are there any major differences that you can see? explain

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.

How are fossils used to date organisms?