Environmental IssuesHard
Question
Mottling of teeth is due to presence of an element in drinking water
Options
A.Mercury
B.Fluorine
C.Boron
D.Chlorine
More Environmental Issues Questions
DDT spraying on the crops results in the pollution of...Match the items given in Column I with those in Column II and select the correct option given below: Column I Column II ...How many statements are correct ?(a) Biomagnification is natural aging of a lake by nutrient enrichment of its water(b) ...Major pollution causing agent is...Match the columns and find out the correct combination...