Coal is used as a fuel to produce energy. It is burned in power plants to generate electricity and in industries to produce heat for manufacturing products like steel and cement. Coal is also used in some homes for heating. ...
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Soil is considered a natural treasure because it provides the foundation for plant growth, which is essential for food production. It contains nutrients that plants need to grow and supports a variety of organisms like insects, worms, and microorganisms. Soil ...
Rainwater harvesting is the process of collecting and storing rainwater for future use. The main purpose is to conserve water, especially in areas where water is scarce. It helps reduce dependence on groundwater and ensures a steady water supply for ...
Freshwater and saltwater are two types of water found on Earth. Freshwater contains very little salt, making it suitable for drinking, farming, and most animal life. It is found in rivers, lakes, and ponds. On the other hand, saltwater is ...
Oxygen is essential for the survival of most living organisms. It is used in the process of respiration, where cells break down food to release energy. Animals, including humans, breathe in oxygen from the air, and plants take in oxygen ...