Biology 5090 · O Level · Effects of humans on ecosystems

Effects of humans on ecosystems — practice question

The following are some consequences of deforestation: 1 fewer animal habitats; 2 reduced uptake of carbon dioxide during photosynthesis; 3 burning that releases gases into the atmosphere; 4 soil erosion and the loss of minerals needed for plant growth. Which two consequences are most likely to lead to global warming?

  • A1 and 2
  • B2 and 3
  • C3 and 4
  • D4 and 1

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