It was at this farm in Derry, New Hampshire, that Robert Frost wrote "Mending Wall", while he lived here from 1901–1911.
I think its oxygen because they breath in oxygen
D is correct. There is fish in the water which provides lots of food. Boats can go up or down the river to transport items. Water is a basic need for humans so for a population to grow you need a good water source. Hope this helps! ;)
When solid they dont move they vibrate but when in liquid they move fast past each other