Gastro-intestinal disturbances are caused by:

$2$-wheelers Bharat Stage-$III$ $(BS-III)$ norms were implemented throughout the country in:

Given below are two statements:
Statement $I$: Electrostatic precipitator is most widely used in thermal power plants.
Statement $II$: Electrostatic precipitator in thermal power plants removes ionising radiations.
In the light of the above statements,choose the most appropriate answer from the options given below:

Provide definitions and explanations for the following terms:
$(i)$ Pollution
$(ii)$ Greenhouse effect

Why does fish mortality occur due to eutrophication?

According to the $CPCB$,what is the significance of particulate matter with a diameter of $2.5 \ \mu m$ or less?