Biology 5090 · O Level · Effects of humans on ecosystems

Effects of humans on ecosystems — practice question

The table presents the source and the effect of four air pollutants. What are the four pollutants?

  • A1 carbon dioxide, 2 methane, 3 nitrogen oxides, 4 sulfur dioxide
  • B1 sulfur dioxide, 2 carbon dioxide, 3 methane, 4 nitrogen oxides
  • C1 methane, 2 sulfur dioxide, 3 nitrogen oxides, 4 carbon dioxide
  • D1 sulfur dioxide, 2 carbon dioxide, 3 nitrogen oxides, 4 methane

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