Two things that INCREASE population, would be an increase in leisure space. Another is if the area is sustainable for life. Two things that would DECREASE population, would be a scarcity of any required resources. A decrease in space, and not a sustainable area.
I would have to say A. ribosomes are known to break and release their digestive juices into the cell upon cell death. thus killing them
I believe it would be false. Termites are generally the first on human remains. I could be wrong though.