Answer:
B. Australia is isolated
Explanation:
They originated in South America and spread throughout the world, but due to competition on other continents, the other marsupials died out, while the ones on Australia lived.
Homeostasis keeps the environment inside the cell always the same so that the cell doesn't have to keep making adaptations to match the ever-changing outside environment. <span />
D, Organism B.
8/2 is 4, the greatest average of both variables.
False, because chromosome are not all the same genetically identical
