Paper 1 · People, Development and Environment
Consider the following statements. 1. The main source of water pollution is sewage water. 2. Microorganisms ultimately cause oxygen depletion in water bodies. 3. Cholera is a water-borne disease. Which of the above are true?
- The main source of water pollution is sewage water
- Microorganisms ultimately cause oxygen depletion in water bodies
- Cholera is a water-borne disease
A1 and 2
B2 and 3
C1 and 3
D1, 2 and 3 ✓ Correct
Correct answer: (D) 1, 2 and 3 — All three statements are true, so that is the answer.
Explanation
★All three statements are true, so that is the answer.
★Sewage water is the main source of water pollution.
★Microorganisms decomposing waste use up oxygen in the water.
★Cholera is indeed a water-borne disease.
★So each of the three statements is true.
★So the answer is 1, 2 and 3.
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