Which of the following causes water pollution? |
1. Pipes discharging harmful chemicals in rivers |
2. Plastic bottles thrown on the street |
3. Garbage thrown in the river |
4. Chimney emitting smoke |
A) 1, 3 and 4
B) Only 1
C) 1 and 3
D) 2 and 4
Correct Answer: C
Solution :
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