Clouds are a part of the atmosphere.
The atmosphere is the layer of gases that surrounds the Earth. It is composed primarily of nitrogen and oxygen, with smaller amounts of other gases, including water vapor.
Clouds form when water vapor in the atmosphere condenses into tiny water droplets or ice crystals. This condensation occurs when the air cools and can no longer hold as much moisture.
The hydrosphere, on the other hand, refers to all the water on Earth, including oceans, lakes, rivers, and groundwater. While clouds are made of water, they are not part of the hydrosphere because they are suspended in the air.
Think of it this way: a cloud is like a temporary storage container for water in the atmosphere. The water in a cloud will eventually fall back to Earth as precipitation, replenishing the hydrosphere.
