Waste : We throw out many unwanted and unuseful things in our day to day activities. These thing are called waste.
Types of wastes: wastes are classified into two groups.
(i) Biodegradable waste materials : These waste materials are decomposed by microorganism and form khad (manure)
For example: leaves of plants vegetable and fruits peels, waste paper, cloth, excreta and animal dung etc.
(ii) Non-biodegradable : Those waste materials which are not decomposed by bacteria are called non-biodegradable wastes materials. These materials cause environmental pollution.
Example: paint, glass, pieces of metas, plastic materials etc. Methods of waste disposal:
1. Methods of disposal of biodegradable waste material:
- Composting
- Vermicompost
- Land filling
2. Methods of disposal of non-biodegradable waste materials:
- Reduce: use when necessary or use, less and judiciously.
- Reuse: Use/again and again
- Recycle : Make new things again from old matter.
