Health, population and environment education is introduced as an integrated subject due to profound interrelationship that exists among the subject matters of these three disciplines. The natural physical aspects and man- made things come under the physical aspect.
The AV valves close first, then the semilunars open and close, then the AV valves open
Oxygen-free radicals that are very proactive molecules with every cellular module/component
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It is important because power, agility, and strength are crucial to be a good basketball player. For example, with good agility you can change directions on the court fast and with some strength, you could combine it with power and you can race super fast and steal the ball more than you could with none of the quailities.
Explanation: