Aboxer can punch a heavy bag for more than an hour without tiring, but will tire quickly when boxing with an opponent for a few minutes. why? (hint: when the boxer's fist is aimed at the bag, what supplies the impulse to stop the punches? when the boxer's fist is aimed at the opponent, what or who supplies the impulse to stop the punches that don't connect? )

Heat affects all vitamins. which vitamins are more sensitive to heat and leach into water? a. vitamin a and d b. vitamin b and c c. vitamin e and k d. vitamin d and c

Many1. why should teens be aware of health issues such as healthy sexuality, dealing with conflict, healthy decision making and cpr? 2. a) what are the 3 most important aspects/skills to learn in order to play volleyball activity well? b) explain how each aspect/skill is important when playing the game. c) describe 2 points of strategy you could use to you be successful at this activity.

He placenta begins absorbing nutrients and oxygen from the mother's body.