There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. these rotifers, however, have survived a long evolutionary history without evidence of having been overcome by excessive mutations. assuming that the eggs are diploid, tetraploid, or partially tetraploid, what mechanism may still occur without fertilization?

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.