Answer:
Trees share water and nutrients through the networks, and also use them to communicate. They send distress signals about drought and disease, for example, or insect attacks, and other trees alter their behavior when they receive these messages.
<span>The cerebellum which is responsible for motor skills, experiences the most rapid growth during the first year of life. The cerebellum is also responsible for balance as well as muscle tone. The cerebellum is one of the most important parts of the brain.</span>
The circuit has to be closed, so B.
If the circuit was open, the flow of energy wouldn't be able to reach the light bulb.
It cannot be skeletal or muscular system as those do not protect from bacteria and sunlight. neitger does the nervous system, so it is the integumentary system.
