Which of the following is NOT a part of the water cycle?

• A. Evaporation
• B. Condensation
• C. Combustion
• D. Precipitation

Answer: (C)

The water cycle consists of key processes that describe how water moves through different states in the environment. Evaporation refers to the process where water changes from a liquid to a gas, often due to heat from the sun. This vapor then cools and condenses into droplets, forming clouds, which is known as condensation. When these droplets combine and become heavy enough, they fall back to Earth as precipitation, which includes rain, snow, sleet, and hail.

Combustion, on the other hand, is a chemical reaction that occurs when a substance reacts with oxygen, usually producing heat and light. This process does not occur within the natural water cycle and does not involve the transformation or movement of water. It is separate from the processes of evaporation, condensation, and precipitation that are essential components of the water cycle.