Subsistence farming presents a large problem for rural farming families if their crops are not successful

What was on result of the potato famine

Plz hury on a timer which statements explain what happens at deep-ocean trenches? check all that apply. crust is formed. mountains are formed. seafloor spreading occurs. crust becomes molten rock. denser plates slide under lighter plates.

The economies of scotland and wales are similar today because both are moving toward