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Pollution - Types and Sources

ICSE · Class 9 · Geography

Quick revision notes for Pollution - Types and Sources — ICSE Class 9 Geography. Key concepts, formulas, and definitions for last-minute revision.

57 questions40 flashcards5 concepts

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A flowchart illustrating the various human activities that lead to water pollution, including industrial, agricultural, and cultural sources, and their impact on water bodies.
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Key Topics to Revise

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1. Core Ideas and Definitions

  • Pollution is environmental damage caused by improper management of resources or careless human activity.
  • A pollutant is a substance that causes pollution, such as carbon dioxide and carbon monoxide.
  • Pollutants may be biodegradable like domestic garbage or non-biodegradable like glass and plastic.
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2. Air Pollution

  • Air with 78% nitrogen, 21% oxygen, and 1% other gases supports life on Earth.
  • Air pollution occurs when large amounts of gases and tiny particles are released into the air and disturb ecological balance.
  • Primary air pollutants are directly released into the air.
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3. Water Pollution

  • Earth has 71% water and 29% land, but water contamination affects both human life and marine life.
  • Water pollution affects surface water and groundwater.
  • Water pollution can come from natural sources and human sources.
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4. Soil Pollution

  • Soil pollution or land pollution results from deposition of solid waste, accumulation of biodegradable material, and toxic chemicals in soil.
  • It has been observed that a loss of 6 million hectare of land occurs per year due to soil pollution.
  • Soil pollution causes diseases in humans and animals such as cholera, dysentery, and typhoid.

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Full Notes

Key Concepts

Pollution is the presence inA pollutant is a substanceAir pollution occurs when large amountsPrimary air pollutants are directly releasedWater pollution affects rivers

Frequently Asked Questions

What are the important topics in Pollution - Types and Sources for ICSE Class 9 Geography?
Key topics in Pollution - Types and Sources include Types and Sources of Pollution Overview, Types and Sources of Pollution Overview, Types and Sources of Environmental Pollution. These are the concepts ICSE Class 9 examiners draw on most — study them first, then practise related questions.
How to score full marks in Pollution - Types and Sources — ICSE Class 9 Geography?
Understand the core concepts first, then work through the 57 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

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

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