Answer:
Synergy:
1. When 2 people Go towards a goal that is the same.
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Energy:
1. involves motion and movement.
Explanation:
Ask this in the physics area next time please, but turn to someone you trust or if your young an adult, like your parents or your teachers. Maybe even your friends. No matter what age tell someone and if they don't know then get medical help if they can't.
It is safest to use both. condom to protect from STD’s and pregnancy and a pill to protect from pregnancy if the condom breaks
You will gain more health benefits because your training the muscles to be under stress.