How did scientists form the geologic time scale? How is this scale organized? What processes changed the Earth's environment during Precambrian time?

What impact did entry into ww1 have on life in the us?

“well,” he says, “there’s excuse for picks and letting-on, in a case like this; if it warn’t so, i wouldn’t approve of it, nor i wouldn’t stand by and see the rules broke—because right is right, and wrong is wrong, and a body ain’t got no business doing wrong when he ain’t ignorant and knows better. it might answer for you to dig jim out with a pick, without any letting-on, because you don’t know no better; but it wouldn’t for me, because i do know better.” the meaning in this excerpt is

Using the pictures and text for reference describe what had to be done to create the central park today