Chapter 14 0.0 / 5 ? BiologyHuman impact on the environmentGCSEAQA Created by: Kirstyburnett9Created on: 15-04-16 09:24 What are herbicides? Chemicals used to kill weeds 1 of 7 Sulfur dioxide is the main gas that causes acid rain. Name another acid gas that can contribute to acid rain? Nitrogen oxides 2 of 7 Why does acid rain often fall a great distance from where it was produced? The clouds of gas are blown by the wind 3 of 7 How is methane produced? Methane is produced by cattle and from rice growing 4 of 7 When trees are cut down, carbon dioxide is released into the atmosphere. Explain how? When trees decay, carbon dioxide is released into the atmosphere due to respiration of microorganisms 5 of 7 Name THREE pollutants which can move from land into rivers and streams? Herbicides, pesticides, fertiliser, toxic chemicals from landfill, untreated sewage 6 of 7 Why does deforestation cause a reduction in biodiversity? There is a loss in habitat for all the animals which live in trees, for example birds 7 of 7
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