Over several years, a population of bats that inhabits a cave decreases. Which of the following factors could cause this decrease in bat population size to occur? Choose all the factors that apply.

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Which of the following is not a benefit of genetically modified foods? a. pest-resistant crops b. herbicide-resistant crops c. plants that do not require water?

Match each phylum or class to its correct characteristic