Marine Corps Physical Fitness Test. Fitness is essential to the day-to-day effectiveness and combat readiness of the Marine Corps. The Marine Corps considers physical fitness an indispensable aspect of leadership.
A: Chemical energy is for producing heat in the human body to sustain vital functions, converting solar energy in plants through photosynthesis, producing electrical energy in batteries to power devices and burning fossil fuels in combustion engines to produce heat or motion.
In this process, the breaking of. chemical bonds in molecules releases energy for use by. the body. An excellent example of this transfer of energy is. that of a football player who converts chemicals in the body. (derived from food) into mechanical work (for example, jumping to take a mark). Heat energy is also given off in this. transfer, which is why a person feels warm after jogging for. a short while.