ANSWER ASAP FOR 45 POINTS

A population of crabs live on a light-colored sandy beach. In this environment there is a population of birds that eat the crabs. One year, there is a volcanic eruption near the beach and dark volcanic ash covers the beach. The sand is now much darker than it used to be. If scientists visited the island a year after the eruption, what would they likely see?

1. There are equal numbers of light crabs and dark crabs, because they are both adapted to the environment.

2. There are more light crabs, because they are better at obtaining food.

3. There are more dark crabs, because they are less likely to be seen and eaten by birds.

4. The eruption has caused all crabs to go extinct.