Salt levels in the ocean are decreasing due to the melting of the freshwater polar ice caps. Salt causes the ocean to be less dense which allows the plant plankton to float and receive
sunlight. What would happen to the sea otter population if the plant plankton population diseases?
PLEASE HELP

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.