Some diseases are the result of intrinsic failures of the system. Water evaporates from the Earth's surface, rises and cools as it moves to higher elevations, condenses as rain or snow and falls to the survace where it collects in lakes, oceans, soil, and rocks underground. Identify, investigate and explain the processes of condensation, evaporation, precipitation, and runoff using a model or diagram. Relate the occurrence of water in the Earth's crust, oceans, and atmosphere to the water cycle processes. Analyze why precipitation occurs in the form of rain, sleet, hail, or snow.
Water is a solvent.
As it passes through the water cycle, it dissolves minerals and gases and carries them to the oceans. Classify different substances based on their solubility in water. Infer the effects of water on the weathering of the Earth's surface in terms of solubility. The atmosphere is a mixture of nitrogen, oxygen, and trace gases that include water vapor. Identify the gas composition of the atmosphere.