Non-biodegradable pollutants refers to the substances that are not found in nature. They are synthesized through artificial techniques.
Non-biodegradable pollutants refers to the toxic materials like plastic, DDT, BHC etc. that can not be decomposed naturally by other living organisms. Such harmful substances accumulate in the environment and can cause air, water, and soil pollution. These pollutants are created by humans.
The other three options are incorrect as they do not produce non-biodegradable pollutants.