Soil: The Skin of the Earth

Soil is a vital natural body composed of minerals, organic matter, gases, liquids, and organisms. It forms the Earth's surface and supports life by providing nutrients and moisture to plants. There are three main soil types: sand, silt, and clay, each with distinct particle sizes. Soil interacts with the atmosphere by absorbing and emitting gases, and it plays a crucial role in water absorption, storage, and purification. It serves as a habitat for various organisms and is essential for construction. Soil's functions include supporting plant growth, modifying the atmosphere, and filtering water.

What are the main components that make up soil?

Explain the role of soil in supporting life on Earth.

Describe the three main types of soil and their characteristics.

How does soil contribute to the purification of water?

What types of organisms can be found in the soil, and what roles do they play?