Killer whales eat fish that are larger than those eaten by bottlenose dolphins. do you think killer whales and bottlenose dolphins use the same frequencies for echolocation? why or why not?

Amoeba sisters video recap pedigrees

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen