Communicable diseases can be caused by various pathogens, including bacteria, viruses , fungi , and parasites.

Elements or a substance can be classified into two categories. Metal and Non-metal. Both metal and non-metal have their own properties and characteristics. Based on this metal and non-metal have their own usage and advantages.

The White Revolution aimed to transform India from a milk-deficient nation to one of the world’s largest producers of milk products.

The Green Revolution was introduced to address the issue of food scarcity and the need to increase agricultural productivity significantly.