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A Clean Environment for Good Health
- A clean place keeps us healthy and feeling good.
- Dirty, polluted places have flies and mosquitoes.
- People in such places fall sick more often.
- Clean air and water are important for our health.
Example 1 — Two Playgrounds
- One playground is clean and well kept.
- The other is dirty and full of mosquitoes.
- So a clean playground keeps children healthier.
Example 2 — City Air
- Smoke from vehicles and factories pollutes city air.
- It can cause coughing or asthma.
- So clean air helps us stay healthy.
Important Points
- The Air Quality Index (AQI) tells us how clean the air is.
- Health is not only about the body — feelings and friends matter too.
Definition — Air Quality Index (AQI)
The Air Quality Index is a number that tells us how clean or polluted the air around us is.
Procedure
Look at Fig. 3.3a and Fig. 3.3b. Which playground would you like to play in, and why?
Observation
Most of us would pick Fig. 3.3a as it is clean and beautiful. Fig. 3.3b is polluted, dirty, and full of flies and mosquitoes. People living in such areas may fall sick more often.
Explanation
A clean place keeps germs and insects away. So keeping ourselves and our surroundings clean helps us stay healthy and feel better.
◆ Summary
- Clean place is healthier.
- Dirty place spreads disease.
- Flies and mosquitoes harm us.
- Keep surroundings clean.
🧠 Test Yourself — Section 3.2
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What two things does our health depend on?
View Answer
Our lifestyle (how we live) and our environment (our surroundings). -
Name two habits of a healthy lifestyle.
View Answer
Eating a balanced diet and staying physically active. Getting enough sleep also helps. -
What should we say NO to for good health?
View Answer
Harmful things like tobacco, alcohol, and addictive drugs. -
What does the AQI tell us?
View Answer
It tells us how clean or polluted the air around us is. -
Why may people in dirty areas fall sick more often?
View Answer
Dirty places have flies, mosquitoes, and germs that spread disease.
