When rocks are broken down by heat and pressure, chemical weathering has taken place.

when rocks are broken down by heat and pressure they will change in to metamorphic rock

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.