Assertion: Plastic bags remain as harmful substances in both soil and water.
Reason: Soil microflora lacks bio-catalysts for rendering plastics harmless.
Both A and R are true
The organic matter is decomposed by the microorganisms present in the soil or water. They do so with the help of enzymes that help them to digest complex organic molecules into simpler ones. But the micro-organisms present on the earth today lack such enzymes which will help them to digest plastic. Hence, plastic cannot be decomposed and becomes non-biodegradable.