Certain chemicals, such as cytochrome c, are found within cells of all living organisms. the biochemical
structure of cytochrome c in ground finches and in tree finches is very similar. this suggests that tree
finches and ground finches have
(1) identical dna (3) evolved at the same time
(2) a common ancestor (4) the same nesting site

One function of the immune system is to attack the foreign cells to protect the body. in organ translate , the body recongnizes that the new organ is made of foreign cells. wha kind of medicine would you give a patient to increase the chances of transplate success

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

In which layer do organisms on earth love?