1. The problem statement, all variables and given/known data How are decomposers affected by the presence of non biodegradable substances in the soil? 2. Relevant equations None 3. The attempt at a solution I think decomposers do not get a place to stay when their place(soil) is full of plastics.Maybe they can't perform their life process like respiration,nutrition etc..in the presence of such substances that cannot be broken down.