10 centimeters, w<span>hen the cervix dilates from 0 to 3 or </span>4 centimeters <span>contractions get stronger as time progresses.</span>
The energy needed to raise the tempature.
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.
In through nose out through mouth