Environment is everything that surrounds a living organism and affects it during its lifetime. It is a sum of physical, biological and chemical factors present on the Earth. Environment can be classified into three broad types: biotic, abiotic and cultural. Biotic factors include biological components of the ecosystem, such as plants, animals, micro-organisms, etc. Abiotic factors include physical factors such as water, land, air, climate, temperature, etc. And cultural factors mean the suitable surroundings made by humans for themselves.