Outline TWO causes of each of the following environmental hazards common in MEDCs: i) Floods ii) Drought iii) Pollution iv) Traffic congestion v) Deforestation. Then, give THREE solutions for THREE of

a) Outline TWO causes of each of the following environmental hazards common in MEDCs:

• i) Floods:

  • Heavy rainfall: Prolonged or intense precipitation overwhelms natural drainage systems.
  • Urbanization: Increased impermeable surfaces (roads, buildings) prevent water absorption, leading to rapid runoff.

• ii) Drought:

  • Low rainfall: Extended periods of significantly below-average precipitation.
  • High temperatures: Increased evaporation rates from land and water bodies, exacerbating water scarcity.

• iii) Pollution:

  • Industrial emissions: Release of harmful gases and particulate matter from factories and power plants.
  • Vehicle exhaust: Emissions from cars, trucks, and other transport vehicles contribute to air pollution.

• iv) Traffic congestion:

  • High vehicle density: Too many vehicles on the road, especially during peak hours.
  • Inadequate infrastructure: Insufficient road capacity, poor road design, or lack of alternative transport options.

• v) Deforestation:

  • Agricultural expansion: Clearing forests for farmland to grow crops or raise livestock.
  • Logging: Commercial harvesting of timber for wood products and paper.

b) Select any THREE of the hazards in (a) above and give THREE solutions for each hazard:

• i) Floods:

  • Constructing flood defenses: Building dams, levees, and embankments to contain water.
  • Improving drainage systems: Widening rivers, clearing culverts, and creating permeable urban surfaces.
  • Afforestation: Planting trees in catchment areas to increase water absorption and reduce runoff.

• iii) Pollution:

  • Stricter emission standards: Implementing and enforcing laws for industrial and vehicle emissions.
  • Promoting renewable energy: Shifting from fossil fuels to sources like solar, wind, and hydroelectric power.
  • Waste management: Encouraging recycling, proper waste disposal, and reducing single-use plastics.

• v) Deforestation:

  • Sustainable forestry: Practicing selective logging and replanting trees to ensure forest regeneration.
  • Establishing protected areas: Creating national parks and reserves to conserve forests.
  • Promoting agroforestry: Integrating trees into farming systems to provide economic benefits while maintaining tree cover.