Karen is NOT correct. This is because the sun's energy is a renewable resource. This means that its use is sustainable hence it is a substance of economic value that can be replaced or replenished in the same or less amount of time as it takes to draw the supply down. Though the sun is a finite resource, it cannot be depleted within human timescale.
For the pheasant question, it would be the top right graph as this shows an increase, then a further increase in the population of pheasants.
For the population of the world graph, it shows positive exponential growth as it is a large amount of growth within a small time period
If Gabriel developed diarrhea as a result of taking an antacid, he's been taking an antacid that contains magnesium.
Magnesium will act as a laxative.
The answer could be any of the following:
* energy
* sugar
* carbohydrates
* (possibly even) food.