It has the proper muscles to com-bust the blood long enough for the oxygen to flow through the whole body and cleanse poor blood
Answer: alternative D.
Explanation: The animals that go through this process understand that everytime they drink the unusual-tasting liquid they will be injected, being that a very unpleasant series of events. They are conditioned, therefore, to be afraid of the unpleasantness of this process by associating pain to the actions that are part of it.
Answer:
A. Cancers are classified according to the type of tissue they affect
Explanation:
