A skateboarder throws a ball away from himself.
If the action force is the boy pushing on the ball, what
is the reaction force?
Which way will the boy on the skateboard move?

Explain the physiological changes that occur when the hypothalamus stimulates the sympathetic nervous system. you can make a flowchart or a simple step process. be sure to include all chemicals/hormones secreted, glands involved and the functions of each chemical/hormone.