I think that it is Reflexes. hope it helps!!!!! :)
Warm air rises and cool air moves in to take over the warm rising air.
Answer:
For functioning of heart, circulatory and execratory systems are required.
Explanation:
It requires at least two body systems to perform the function because the functions does not be completed solely, it requires coordination among systems which help them to fulfill their task. For example, the function of the heart requires circulatory system and execratory system for the pumping of blood throughout the body. it is an involuntary action which is not control by nervous system.
A gated channel allows the specific type of molecule or ion individually. Hope this helped!
