Various factors in the environment may harm people Naturally many poisonous substances get in to the air water or food as a result of human activities It is a threat to heath .Unhealthy population in a country is a serious threat to the development of the country.
Activity 2
List out the diseases caused by the environmental pollution. Check your list with the following.
1. Cholera
2. Hepatitis
3. Lung diseases
4. Diarrhea
5. Stress
6. High blood pressure
7. Heart diseases
8. Dengue
9. Malaria
10.Filaria
11.Chikengunya
12.Japanese encephalitis
13.Worm diseases
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