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Human Impact on Environment

NIOS · Class 10 · Science & Tech

Quick revision notes for Human Impact on Environment — NIOS Class 10 Science & Tech. Key concepts, formulas, and definitions for last-minute revision.

44 questions20 flashcards5 concepts

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An infographic comparing and contrasting natural environmental problems (like earthquakes, floods, cyclones) and man-made environmental problems (like pollution, deforestation), highlighting their cau
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Key Topics to Revise

1

Natural Disasters and Environmental Impact

  • Natural disasters are environmental problems caused by natural phenomena, not human activities
  • Major natural disasters include floods, cyclones, earthquakes, forest fires, tsunamis, landslides, and cloudbursts
  • Floods occur due to inadequate river capacity during heavy rainfall and poor drainage systems
2

Human Population Impact on Environment

  • World population is 6.91 billion, expected to reach 7.5-10.5 billion by 2050
  • India's population has crossed 1 billion mark, creating resource stress
  • Large population requires more land, water, food, energy, and space
3

Pollution Types and Effects

  • Pollution is any undesirable change in environment due to human activities
  • Four main types: Air, Water, Land/Soil, and Noise pollution
  • Air pollution sources include automobiles, industries, and burning fossil fuels
4

Waste Management

  • Waste classified into biodegradable and non-biodegradable types
  • Biodegradable waste: leaves, food scraps, animal dung - decomposed by microbes
  • Non-biodegradable waste: plastics, glass, aluminum cans - cannot be easily degraded

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Full Notes

Key Concepts

Environmental problems caused by natural forcesThe cutting down of natural forestThe presence of unwanted substancesThe enrichment of water bodiesThe accumulation of non

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Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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