We generate so much garbage in our day-to-day activities.
Garbage is thrown into low lying open areas called landfills.
The non-usable garbage is spread on the landfills and later covered with soil. Once the landfill gets completely full, it is converted into a park or a playground.
The garbage which rots and then gets completely mixed with soil is known as bio-degradable.
You can prepare compost by digging a pit, filling it with bio-degradable waste, and dried animal dung, sprinkle it with water to make it wet, put red worms in it, gently mix and move the top layer for few weeks. And at the end of 3-4 weeks your vermin-compost is ready to be taken out and dried in sun.
Red worms have gizzard to chew food.
Non bio-degradable waste consists of plastic items, electronic gadgets, metals, etc.