Answer:
If there is less rainfall than in agriculture or river scarcity of water is increase and If hotter weather than we need more water to drink or other purpose and we fell to hot
I believe its lack of worthy projects, but ill tell you if im wrong.
Superposition is the geologic principle which explains why the bottom stratum in a section of rock is the oldest. The word literally means placing one thing on top of another where the lower strata are the older.