Answer:
Probably A.
Explanation:
The reticular formation can be said to be a network of nuclei in the brainstem that wakes or alert us to a sharp reaction or occurence at a particular time.
Enzymes act as catalysts that remain unmodified as they increase the rate of a chemical reaction.
Answer:
There <u>warning calls</u> of other animals to scare them away from food.
Explanation:
Honest sentry to deceptive thief.