Question : How many statements are incorrect :- (a) Automobiles are major cause for atmospheric pollution atleast in metrocities. (b) Water which contain 0.1% of impurities of sewage is harmful for drinking. (c) As organic matter increased BOD decreases. (d) High concentration of DDT affects Ca-metabolism in birds.

Question : How many statements are incorrect :- (a) Automobiles are m

1.	Question : How many statements are incorrect :- (a) Automobiles are major cause for atmospheric pollution atleast in metrocities. (b) Water which contain 0.1% of impurities of sewage is harmful for drinking. (c) As organic matter increased BOD decreases. (d) High concentration of DDT affects Ca-metabolism in birds.
Answer» One Three Two Four Answer :A