A type of metamorphic rock formed when limestone is pushed down into the earth and subjected to intense heat and pressure for a long period of time. The process that turns any rock into magma. Melting a rock requires extremely high temperatures, which only occur far beneath the earth's surface.
C because nuclear power=radiation
Answer:
3.29ft/mi
Explanation:
The gradient of a river is the slope through which a river flows. It measures the vertical drop in elevation of river to the horizontal distance.
Mathematically;
River gradient =
Elevation = 1229ft
Horizontal distance = 373miles
River gradient = = 3.29ft/mi