1) Arithmetic density- the number of people per square unit of land
2) Physiologic density- Is the number of people per square unit of farmland.
3) Agricultural density- is the number farmers per unit of farmland.
Answer is A. I kid chemistry a while back but I am pretty certain it is A.
Cholera, its a water borne disease.
The human eye is grief in damage of in-depth perception, color recognition, and peripheral vision. Judging speed and distance based on visual evidence is also more difficult in the dark. In addition, the darkness of night, and even the dimness of dusk and dawn.
