Ich statement best describes how artificial selection can decrease a population's biodiversity? Artificial selection removes weaker species, leaving stronger species behind to reproduce.
Artificial selection selects which traits (good or bad) are passed on to the next generation.
Artificial selection decreases the rate of natural selection and change within a population.
Artificial selection reverses natural selection by selecting species most adapted to survive.

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

This rapid change in species that rarely leaves behind fossil evidence is referred to as