The immune system helps guard against infection, protect from UV radiation, and regulate body temperature.
B I don't belive plant life is that important to this question
Answer:
A) the cannon bard theory.
Explanation:
the cannon bard theory is an emotion that reflects that trigger feelings and physical reactions at the same time. in this specific example fear would be a feeling and running would be a physical response. could also be described as fight or flight response.
The answer is C. A catalyst speeds up the rate of a chemical reaction. However, it is not consumed during the course of the day.
