Soil is getting polluted by pesticides, factory wastes, the reclamation of poisonous industrial and household wastes, and the careless abandonment of non-biodegradable garbage. Some of those wastes remain under the ground for 500 years, which pollutes the environment.
Recently, the wastes that are not rotten easily, such as bottles, cans, plastics, vinyl, Styrofoam, and aluminum, are increasing so how to treat them is a worry. Incinerating the rotten wastes is a treatment way, but it can pollute the air or can generate the substances that have bad influence on organisms. And it causes other environmental problems. Therefore, the quantity of wastes generated should be reduced as far as possible, and recyclable wastes should be recycled.