Photosynthetis, burning of fossil fuels, plant respiration.
2.88 per month is 32.88 per month in other words 32,88 dollars
Water had the capability to hold up the thin overhang of the underground.
When water is depleted, there is nothing to support this overhang, which eventually led to the formation of sinkholes.
As for the collective behavior, it's all because of the scarcity. Water is one of human's basic needs to survive. When water is scarce, this will force the people to compete with one another to obtain it, which will cause the behavior
1.inorganic
2.occurs natural (synthetic diamonds are not)
3.has atoms arranged in an orderly patter/structure
4.has a definite chemical composition
5. are solid
I hoped this helped :)