Phosphate-containing fertilizers cause water pollution. The addition of such compounds in water bodies causes-
a. | Enhanced growth of algae |
b. | Decrease in the amount of dissolved oxygen in the water |
c. | Deposition of calcium phosphate |
d. | Increases fish population |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Assertion (A): | Excessive use of chlorinated synthetic pesticides causes soil and water pollution. |
Reason (R): | Such pesticides are non-biodegradable. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |