Devise an activity to show that organic waste is bio degradable while plastic is not.
Collect garbage from your house before it is thrown into the dustbin. Separate the garbage into two groups.
In A group, include wastes such as polythene bags, chips packets, empty plastic bottles, plastic toys, etc. In B group, include only kitchen wastes like peels of fruits and vegetables, waste food, newspaper, and garden wastes like dead leaves and other plant parts.
Bury this material separately in two pots and label them as A and B. Remove the top soil after one week, and check the status of the garbage. Then, approximately after four weeks, check the condition of the garbage again.
Observation
It will be observed that the waste in pot B decomposes, while the waste in pot A does not decompose.
The waste in pot B does not rot completely. However, it gives a bad odour after one week. But, after four weeks the waste rots almost completely and becomes odourless. It no longer has the original material and is now dark brown in colour.
What is the reason for making this observation? What is the difference between the waste kept in pot A and waste kept in pot B?
The difference is that the waste (plastic) kept in pot A is non-biodegradable, while the waste (organic waste) kept in pot B is biodegradable.