Waste Management — Part 1: Impact of waste and key environmental terms: visual lesson, ICSE Class 10 Geography (H.C.G. Paper 2)

Lesson

Where does it all go?

Part 1 — Every home, market, factory and hospital produces waste. When it piles up uncollected or is dumped carelessly, it spoils the landscape, pollutes air, water and soil, and spreads disease. Waste also links to wider problems such as global warming and polluted lakes.

In this lesson you will

Explain three harmful effects of accumulated waste with local examples
Explain why waste management is essential in growing Indian cities
Define global warming, acid rain, eutrophication, biomagnification and thermal pollution, with one cause and one effect of each

Table of sources of waste with examples
Source	Examples of waste
Households	Food scraps, paper, plastic, glass, old batteries
Markets	Vegetable waste, packaging
Industries	Ash, slag, chemicals, hot water
Hospitals	Used syringes, dressings (biomedical waste)
Farms	Crop residue, pesticide containers

Concept

Spoilt landscapes and pollution

Spoilage of the landscape: heaps of garbage along roads, railway tracks and riverbanks, and huge dumping grounds such as Ghazipur in Delhi and Deonar in Mumbai, which rise like hills and ruin the scenery. Water pollution: rainwater seeping through waste forms leachate, which carries chemicals into groundwater and streams; plastic bags clog drains, worsening urban floods. Air pollution: burning garbage gives off smoke and toxic gases; rotting waste releases methane, which can catch fire. Soil pollution: plastics, batteries and chemicals poison the soil.

Table of four harmful effects of waste and their causes
Effect	How waste causes it
Ugly landscape	Roadside heaps, giant dumps
Water pollution	Leachate; drains clogged by plastic
Air pollution	Burning garbage; methane fires
Soil pollution	Plastics, batteries, chemicals

Concept

Health hazards

Garbage heaps are breeding grounds for flies, mosquitoes and rats, which spread cholera, typhoid, diarrhoea, dengue, malaria and other diseases. Smoke from burning waste causes breathing problems. Waste pickers risk cuts, infections and poisoning from sharp, hazardous and biomedical waste. Stray cattle eat plastic bags and fall ill. After floods, rotting garbage and stagnant water raise the risk of epidemics — poor sanitation was one factor behind the plague outbreak in Surat in 1994.

Table of health hazards caused by waste
Hazard	Example
Disease carriers	Flies, mosquitoes, rats
Water-borne disease	Cholera, typhoid
Breathing problems	Smoke from burning waste
Injury and poisoning	Waste pickers handling sharp or toxic waste
Harm to animals	Cattle eating plastic

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