The process of meiosis increases genetic variation when genetic information is exchanged during crossing-over and when alleles are independently and randomly assorted into daughter cells. which of the following processes also contributes to genetic variation? a. genetic cloning b. cell specialization c. random fertilization d. mitotic divisions

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.

Closing romer’s gap. what is the significance of the new fossil evidence found in scotland? answer in claim evidence and reasoning