Page 262 - New Medley 5 Semester 2

Competencies
C-3.1, C-3.3, C-4.4, C-4.7

• Critical thinking
• Environmental literacy
• Creativity
21st CENTURY SKILLS
• AIL
1 Pollution

Warm Up

Hold a discussion on the warning given in the picture.

Before learning about pollution, we should learn about the environment
we are living in. The Earth is home to all the living and nonliving things.
The living things include human beings, animals and plants. The nonliving

things are land, air, water, soil, buildings, houses, etc. The living and

nonliving things which surround us form our environment. Actually,
environment means everything that surrounds us. There are two main parts
of the environment—natural and man-made. The natural environment

is formed by nature. The man-made environment is created by human

beings by changing the natural environment.

Why do human beings change the natural environment? They change the
natural environment for their own benefit. They need more land to live

and more food to eat. In one sense, human beings need more comfort,

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