Which of the following organs is damaged by pollutants like $SO_2$,$CO$,and $NO_2$?

Summarize the international standards for the concentration of various metals and ions in drinking water.

What does the troposphere contain?

Do you observe any soil pollution in your neighborhood? What efforts will you make for controlling the soil pollution?

What is the percentage contribution of $CFCs$ to global warming compared to ozone (in $\%$)?

Which of the following statement$(s)$ is (are) incorrect reason for eutrophication?
$A$. excess usage of fertilisers
$B$. excess usage of detergents
$C$. dense plant population in water bodies
$D$. lack of nutrients in water bodies that prevent plant growth
Choose the most appropriate answer from the options given below: