Natural Resourc...

The use of fossil fuels such as coal and petroleum has revolutionized the way of living. However, the use of fossil fuels has given rise to many problems.

Eutrophication is a process in which aquatic vegetation increases rapidly and disrupts the normal ecosystem of the water body.

Deforestation is the cutting of trees. It involves mass destruction of forest cover.

These days, pesticides are used on a large scale to protect crops from various types of pests. During rainy season, run-off from farms, contain pesticides like DDT that contaminate the surface water.

The greenhouse effect is the phenomenon of increase in the Earth’s temperature due to a rise in greenhouse gases.

Photosynthesis is the process by which plants make their food. In this process plants make their food from carbon dioxide gas, water, and minerals in the presence of light and green colour pigments known as chlorophyll.

Solar energy maintains the temperature of Earth’s atmosphere. Some gases present in atmosphere trap solar energy and help in maintaining Earth’s temperature. This is known as the greenhouse effect.