The correct sequence of atmospheric layers starting from the Earth is:

Given below are two statements:
Statement $I$: Non-biodegradable wastes are generated by the thermal power plants.
Statement $II$: Bio-degradable detergents lead to eutrophication.
In the light of the above statements,choose the most appropriate answer from the options given below:

Which of the following components,when increased in concentration in the atmosphere,causes acid rain?

In the stratosphere,most of the ozone formation is assisted by:

What are pesticides and herbicides? Explain giving examples.

Give brief information about the types of smog.