What is not true about early civilization A group of people was considered a civilization once they could make nature work to their advantage

Division of labor and surplus of food were developed before irrigation

Natural disasters and large scale diseases altered the growth of civilization

Only some of the earliest civilization started in river valleys

Geography could be a challenge or benefit to the people that settles an area

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34

c, because the american revolution was from 1765 to 1783.

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.