Environment

Land,water,air,plants and animals comprise the (a)   environment

(a)   is also a source of mineral wealth.

The (a)   force of the earth holds the atmosphere around it.

Industrial revolution enabled large scale (a)   .

A perfect balance is necessary between the (a)   and human environment.

Human learn new ways to use and change (a)  

The changes in the atmosphere produce changes in weather and (a)  

Lithosphere is the domain that provides us (a)   .

(a)   is a trade in which goods are exchanged without the use of money.

(a)   is formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment.