Section 2: Read the following passage, then answer the questions below.
All living things have a life cycle. Have you ever thought that nonliving things also have cycles? Water is a nonliving thing that has a cycle in which it transforms from one state to another. Water can be found in the atmosphere as a gas, on land as a solid or liquid, and underground as liquid water. The water cycle, also known as the hydrological cycle, includes evaporation, condensation, and precipitation.
The sun affects the water in rivers, seas, and oceans. It heats the bodies of water, causing water particles to change from a liquid to a gas (water vapor) and rise into the atmosphere. This process is called evaporation. In addition, plants release water vapor through openings in the plant’s leaves in the form of gas. Moreover, human beings and other animals release water vapor when they breathe. This is visible on cold winter mornings when water vapor comes out of someone's mouth as they breathe.
When the water vapor rises into the atmosphere, it cools down and condenses, forming clouds. This process is called condensation. The clouds take on different forms based on the amount of water vapor. When the weather conditions are right, including the right temperature and the amount of water vapor, the water droplets in the clouds become heavier than the air, leading to precipitation in the form of rain, snow, sleet, or hail, which returns water to the Earth's surface. Some of this precipitation flows over the ground, seeps into the ground, evaporates again, or makes its way to rivers, lakes, and oceans.
This process happens continuously to maintain balance on Earth. Therefore, we should protect natural water sources and reduce harmful human activities to help preserve this essential cycle for future generations.