What would happen to the possible variation in gametes if the number of chromosome pairs increased from two to three? What if the number increased again from three to four?

The correct answer is: it would create a polyploidy.

Explanation:

Polyploidy consists of an organism or a cell having more than 2 pairs of chromosomes, which in most species (including humans) is abnormal and not compatible with life.

An organism with 3 sets of chromosomes -69 in total- (instead of 46) has a triploidy. In humans, this happens when there's an extra haploid set from one of the parents.

An organism with 4 sets of chromosomes -92 in total- has tetraploidy.

These polyploidies result in miscarriage.

a compound light microscope is used to magnify objects in steps.  

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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.