The water cycle is a biogeochemical cycle that is a closed system. which of these sentences describes a viable stage that occurs in the water cycle? (a)water enters and exits the system boundaries of the cycle. (b)water can change from solid to liquid at certain points in the cycle. (c)ice forms anew, adding matter to the cycle. (d)water vapor condenses, subtracting energy from the cycle.

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.