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Landfill is a/an:- open area
- high lying open area
- open area near a river/lake
- low lying open area
Correct Answer: (d) low-lying open area
Explanation:
The landfill is a low-lying open area. It is a process in which garbage is buried under the soil in an area.
This garbage includes plant and animal wastes, and waste food, when left as such in pits or heaps, is acted upon by bacteria, fungus-like organisms, causing rotting.
Rotting leads to the formation of manure. It is the conversion of complex molecules into simple molecules that can be used by plants for growth and development. Thus, the rotting and conversion of some organic materials into manure is called composting. Hence, a landfill is an area where a lot of garbage is collected, spread out, and covered with soil to convert it into compost and use as manure for plants.
Advantages of using Landfills:
It is a cheap way to get rid of solid waste. It prevents environmental dumping. It reduces the transportation distances of wastes. They are important to keep regions clean.
Disadvantages of using landfills:
Landfills may lead to soil pollution, groundwater pollution and air pollution. The foul smell and visual pollution are also of concern.
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