Approximately elements occur naturally on earth. 117, 25, 92, 82

The correct answer for the blank is-

92.

There has been total 118 elements discovered o earth out of which approximately 92 elements are naturally occurring. Other elements are produced by artificial means.

The most abundantly occurring elements are oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorous.

the energy generated by an individual's metabolism is calculated in met (metabolic equivalent of task). the met is the ratio of the work metabolic rate to the resting metabolic rate. one met is illustrated as 1 kcal per kilogram per hour, and is probably equal to the energy cost of sitting quietly.

1 met is equal to 1.162 watt per kg

1 kg is equal to 1000 grams

as the person weighs 80000 gm, that is, 80 kg.

therefore, 80*1.162 = 92.96

thus, the person expends 92.96 watts of power while at rest.