What three lifestyle factors decrease the risk of cardiovascular disease development?

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.

Compare the composition of the moon's surface with the composition of the earth's surface.

Which enzymes break down carbohydrates?