Which statement best describes the amount of catalyst that remains at the end of a reaction?

The answer is the catalyst is consumed by the reaction, so none remains at the end of the reaction.

Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst. With a catalyst, reactions occur faster and require less activation energy.

the dark variety, as they are not visible on the dark tree barks

explanation:

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.