The answer is C. hope this helps
When climbing a hill or mountain, there are different condions which the body reacts to, first: the body begins to exercise, since it must carry all our weight when climbing up a hill, this generates that the heart accelerates and pumps the blood more quickly so that it reaches our whole body out, and the second one, is that at a higher height, less oxygen, if already, our body comes with the heart shaken by the physical exercise, now it has to accelerate your breathing to get the necessary oxygen for the blood and the body, these two things make us breathe heavily.
Answer:
the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
The term that refers to similarities and differences among people including those such as race, age, ethnicity, physical abilities and characteristics, and gender is known as surface-level diversity
