B, a. hopefully that helps
Physical properties! it’s the rocks physical characteristics
Evaporation, condensation, and precipitation are all parts of the water cycle. So the answer would have to be the water cycle.
The word that best fits is frequency. The sentence is The frequency of a wave is a measure of the amount of energy it carries. There is a direct relationship between frequency and energy of a wave. The constant of proportionality is h, Planck's constant. So, Energy = h * frequency. So, the answer is frequency.<span> Although you should know that wavelength is related to frequency and so it is also a measure of the amount of energy and it should also be other valid answer.</span>
