Which of the following are two mechanisms for water pollution?
a. high and low
b. direct and indirect
c. lethal and nonlethal
d. harmful and innocuous

The two mechanisms for water pollution are direct and indirect, whereas high and low, lethal and nonlethal, harmful and innocuous are not.

Answer erosion,oil spills,pollution,tourism,urban development;

Aristotle thought so every portion of the earth tends toward the center until by compression and convergence they form a sphere. travelers going south see southern constellations rise higher above the horizon.~ hope this !