Question

1. in ostriches, there are 2 types: ones that run fast and those that run slowly. the fast birds can reach up to 40 miles an hour. jackals love to eat ostrich, and they can reach speeds of up to 35 - 40 miles per hour. a flock of ostrich will lay ~ 10 eggs, but many rodents break into the eggs and eat the fetus before they hatch.

a. what ostrich will natural selection select against? _____________ for? _____________

Explanation:

Natural selection is the process by which organisms better adapted to their environment tend to survive and reproduce more successfully. In this case, ostriches that run slowly are at a disadvantage because jackals (their predators) can reach speeds up to 35 - 40 miles per hour. Fast - running ostriches (up to 40 miles per hour) have a better chance of escaping jackals. Also, if many eggs are predated by rodents, but this part is more about egg predation rather than the trait of the adult ostrich. The key trait related to natural selection (survival of the adult) is running speed.

Answer:

Against: Ostriches that run slowly.
For: Ostriches that run fast.