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Revision Notes

Effects of Pollution

ICSE · Class 9 · Geography

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

62 questions38 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

1

1. Environmental Pollution: Basic Idea

  • Environmental pollution is one of the most serious threats facing the world.
  • Air, water, and soil are life-supporting systems for living beings.
  • Polluted air can cause illness and can even be fatal.
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2. Effects of Air Pollution

  • The atmosphere is the blanket of air around the Earth and it supports life.
  • The atmosphere contains nitrogen, oxygen, argon, carbon dioxide, helium, methane, krypton, ammonia, and carbon monoxide, among other gases.
  • Air composition can be disturbed by natural calamities and human activities.
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3. Effects of Water Pollution

  • Water pollution may be defined as the presence of impurities in water.
  • Sources of water pollution include sewage and domestic waste, industrial effluents, fertilisers, and oil spills.
  • Water pollution affects health through micro-organisms, chemical toxicants, mosquito-borne diseases, and biological agents.
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4. Effects of Soil Pollution

  • Soil pollution by chemicals and organic materials creates health hazards for humans.
  • Chemical fertilisers can wash into waterways, lakes, and underground aquifers.
  • Chemical fertilisers poison water supplies and kill aquatic life.

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Full Notes

Key Concepts

Environmental pollution is the damage causedThe atmosphere is made upNitrogen cycleDepletion of vegetation and increased carbonAir pollution can cause asthma

Frequently Asked Questions

What are the important topics in Effects of Pollution for ICSE Class 9 Geography?
Key topics in Effects of Pollution include Types of Pollution and Their Effects, Effects of Pollution - Chapter Overview, Types and Effects 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 Effects of Pollution — ICSE Class 9 Geography?
Understand the core concepts first, then work through the 62 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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