Two populations of flowers are growing in fields on either side of a river. One population is wild and affected by natural selection while the other is
selectively bred by a farmer. A scientist proposes one way to determine
how they are different would be to simulate a drought for 5 years for each
filed. They scientist thinks that if there was a drought, there would be more
variation in the survival of the wild plants than the artificial plants. Some
wild plants would live and some would die. In the artificial population, most
all the plants would live or most all plants would die. Which response
correctly evaluates the scientist's proposal with supporting evidence?

Many bird species build nests in which they raise their offspring. one of these species is known as the magnolia warbler. breeding pairs of magnolia warblers build nests out of pieces of grass and twigs. the female warbler will then lay her eggs in the nest and sit on the eggs for a few weeks until they hatch. after the offspring have hatched, the female will continue to sit on the newborn chicks to keep them warm. both the male and the female bring food for the offspring to eat until the young are mature enough to find food on their own. which of these most likely describes why birds such as the magnolia warbler build nests in which to raise their offspring? a. nest building decreases the amount of energy used by the parent birds to raise their offspring to adulthood. b. nest building increases the probability that the offspring will survive and eventually produce offspring of their own. c. nest building decreases the amount of food that the offspring require the adult birds to provide. d. nest building increases the probability of the offspring being located by airborne predators.