As water molecules move through the hydrological cycle, water both gains and loses energy. in which case would the water be losing energy?

In condensation water loses energy in water cycle.

Explanation:

The water cycle describes the continuous motion of water on, above, and below the surface of earth and it is also known as hydrologic cycle. In this process water both gains and loses energy. When evaporation occurs it gains energy from surrounding and cools the environment. When condenses occurs it loses energy and warms the environment.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates