The grasslands of Asia are known as:

The sphere of living matter together with water, air, and soil on the surface of the earth is

The term 'Biosphere' refers to:

The part of the Earth and atmosphere that supports life is known as:

$A$: Holistic approach explains the environmental interactions.
$R$: All environmental factors are integrated with no limits of time and space.

The study of the relationship between organisms and their environment is called .....