Environment around us (Chapter 1)

Ecosystem:

Plants, animals, and human beings depend on their immediate surroundings. They are
often interdependent for many reasons. These relations of dependence and
interdependence together constitute an ecosystem.
In other words, an ecosystem is a system formed as a result of the interactions of all
living organisms with each other, and with the physical and chemical factors of the
environment in which they live.

Natural Environment

The environment is our basic life supporting system. Any environment which is found
naturally is known as a natural environment. Natural environment refers to both biotic
and abiotic conditions existing on the earth. The environment that consists of all objects
created by nature is called natural environment. The natural environment comprises
land, water, air, plants and animals. In other words, they are known as lithosphere,
hydrosphere, atmosphere and biosphere.

Components of Environment

There are three major components of the environment, namely natural environment
(consists of all objects created by nature), human environment(consists of human beings)
and human-made environment (consists of objects created by human beings).

Natural environment comprises land, water, air, plants and animals.

  The human environment

The human environment comprises human beings. The human-made environment comprises bridges, roads,monuments etc.