Environment

All the objects created by nature comprise of natural environment .It includes both biotic as well as abiotic condition existing on earth. Lithosphere, hydrosphere, atmosphere are the domain of natural environment.

The hydrosphere is water found on, under, or over the surface of a plane on earth. The different components are –lake, river, ocean etc.

Green plants use carbon dioxide to make their food and release oxygen. Human or animals release carbon dioxide.

No, plants cannot take nitrogen directly from the air. Bacteria, that live in the soil and roots of some plants take nitrogen from the air and change it into the nitrogen compound form. This nitrogen compound is used by plants.

The oxygen is the second most plentiful gas in the air. Humans and animals take oxygen from the air .Green plants produce oxygen during photosynthesis.

Water covers a big area of the earth’s surface and this area is called hydrosphere. It comprises various sources of water and different type of water bodies like river, lakes, seas, ocean etc.

Air is neither an element nor a compound. It is a complex mixture of gases and there are also a number of non gaseous substances present in it.

Whatever we see in our surrounding that is environment. Environment is our basic life support system .It provides the air we breathe, water we drink, the food we eat and the land where we live.

Carbon dioxide, helium, ozone, argon and hydrogen are found in lesser quantities.