An ecologist samples the number of individuals in a population of algae in water that is 10 m deep. He uses a 1 m2 sampling technique, where he randomly drops a 1-m2 square and then counts the number of individuals for this specific species of algae where it drops. He repeats this ten times and finds that the average number of individuals in the counts is 12. The total area covered by the population is 100 m2. Using this method, how many individuals are in the population

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.