sowmya

Introduction Water is one of the most important natural resources on Earth. All living organisms—humans, animals, and plants—depend on water for survival. However, in many parts of the world, water scarcity is becoming a major problem. Rapid population growth, climate change, urbanisation, and overuse of groundwater have increased pressure on our water resources. Therefore, we … Read more

Introduction Energy is one of the most important needs of modern society. Electricity powers our homes, industries, hospitals, schools, transportation, communication systems, and everything we depend on in daily life. As the demand for energy increases, countries look for safe, efficient, and reliable sources of power. One such powerful source of energy is nuclear power. … Read more

Introduction Waste is an unavoidable part of human life. Every activity we perform—eating, studying, cleaning, cooking, traveling, and even using electronic devices—produces some kind of waste. With the increase in population, urbanization, and industrialization, the amount of waste generated across the world has increased rapidly. If this waste is not handled properly, it leads to … Read more

Introduction Green energy, also called renewable or sustainable energy, refers to energy obtained from natural sources that are continuously replenished and cause minimal harm to the environment. Examples include solar power, wind energy, hydropower, geothermal energy, tidal energy, and biomass. These sources differ from fossil fuels (coal, petroleum, and natural gas), which take millions of … Read more