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- 3. The waste materials rot easily and mix with soil. Micro-organism , such as bacteria , fungi and earthworms help to decompose such waste.
- 4. Non-biodegradable waste materials do not rot easily .They do not mix with the soil and remain in the environment for a long time. Plastic goods,synthetics ,aluminium cans and silver foil are a few non-biodegradable waste material
- 6. Waste is first collected at one place and then burnt . Chemicals and other poisonous waste is burnt in a large furnace . This is harmful and causes air pollution.
- 7. Waste is loaded in trucks . It is then taken far away from the town or city and dumped in the open . Disposing of waste in this way pollutes the environment .
- 8. Landfills are found in the outskirts of the city . Deep ditches are dug in the ground and the garbage is dumped in them . When full these ditches are covered with soil.
- 9. The household waste dumped in the pit , after some time turns into Manure , which is called as Compost . Crops grown using natural manure instead of chemical fertilizers are healthier . They are called Organic foods.
- 10. We should care for our environme- nt and protect it in every way . The waste we produce can be biod- egradable or non-biodegradable. Burning,open dumping,landfills and compost pits are ways of disposing waste. We must recycle and reuse things whenever possible.
- 11. 1.Deep ditches dug in ground for garbage is disposal pits Ans : Landfills 2.There are two types of waste Ans : biodegradable & non biodegradable 3.In villages people dispose of their household waste in Ans : Compost pits