You are looking at a structure in the respiratory tract that is filled with small sacs or air pockets. what structure are you looking at?

Alveoli.

Explanation:

Alveoli are the hollow cavity present in the lung parenchyma. Alveoli are the main site of exchange of gases in human beings.

The alveoli has structure like a sac or air pockets that filled with the gas. The basic unit of the ventilation is alveoli. The epithelial layer covers the surface of  alveoli.

Thus, the correct answer is alveoli.

it would be rhyolitic hope this

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.