The first one! A!
Have a good day!
Answer:
He is starting to suffer from dehydration and heat exhaustion
Explanation:His body can no longer produce enough sweat to cool him down simply because of the fact that he did not drink any liquids but it is important he gets hydrated soon or he may need to go to the emergency room
Answer:
The vascular system
Explanation:
The human blood circularitory system can be used to explain capillary action in the human body, our heart pumps blood in and out with no use of external forces.
The answer would be hypothalamus.
Hypothalamus is a part of the brain that located below the thalamus (hypo mean "under"). Hypothalamus can control nervous and endocrine system. It was divided into front/anterior, tuberal and back/posterior part. Thirst would be regulated by anterior and posterior part, temperature by anterior part and sexual behaviour by anterior part.
