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2. man-madE EnvironmEnt
This includes changes and modification of the natural environment made by human beings.
It shows the activities, creations and interactions among human beings. We find that not
everything around us is the gift of nature. But, many things such as buildings, roads, bridges,
parks, industries, furniture, books, etc. are human creations. These are the components or
examples of human made environment. Humans have created these components by modifying
the natural environment. They create such things by using their skills to satisfy their needs.
EnvironmEntal pollution
One of the greatest problems that the world is facing today is that of environmental pollution,
increasing with every passing year and causing grave and irreparable damage to the earth.
Environmental pollution is any discharge of materials or energy into water, land or air that
causes or may cause acute or chronic detriment to the earth’s ecological balance or that
lowers the quality of life.
Pollutants may cause primary damage, with direct identifiable impact on the environment,
or secondary damage in the form of minor perturbations in the delicate balance of the
biological food web that are detectable only over long time periods.
Environmental Pollution
Now I Know :
In simple terms, whatever we see in our surroundings are collectively called environment.
Our environment consists of two main components– natural and man made.
The atmosphere is the body of air which surrounds our planet.
The hydrosphere is composed of all of the water on or near the earth.
Biosphere is a narrow zone of the earth where land, water and air interact with each other to support life.
An ecosystem is a living community of plant and animals sharing an environment with non-living elements such
as climate and soil.
(Assessment of Learning Outcome)
A. Tick () the correct option :
1. Environer is a __________ word.
(a) French (b) Greek (c) Hindi (d) English
2. Which of the following is included in the natural environment?
(a) air (b) water (c) land (d) all of these
Social Studies-7-7
8 8 Social Studies
