Biological Consequences of Air Pollution (Edexcel IGCSE Biology: Double Science)

Air pollution

• Pollution of air can lead to several biological consequences:

  • Sulfur dioxide (SO₂) pollution:

    • Combines with water vapor to form acid rain, damaging plants, aquatic life, and soil.
    • Causes respiratory problems in humans.

  • Carbon monoxide (CO) pollution:

    • Binds to haemoglobin, reducing oxygen transport in blood.
    • Can lead to suffocation and death in high concentrations.

Air pollution and acid rain

How air pollution leads to acid rain