B3 Humans and their environment 2.0 / 5 based on 1 rating ? BiologyHuman impact on the environmentGCSEAQA Created by: ZinaK - Team GRCreated on: 01-05-13 20:46 What causes water pollution? Toxic chemicals from industrial factories, fertiliser and pesticides from farm and also sewage 1 of 5 What causes air pollution? Smoke from particulates, or gases such as carbon dioxide which contributes to global warming or sulphates which cause acid rain 2 of 5 What causes land pollution? Pesticides and herbicides from farming, and also toxic chemicals 3 of 5 Why does deforestation contribute to more carbon dioxide in the atmosphere? The plants no longer absorb it, it no longer acts as a carbon sink and it is released when the forest burns or the vegetation rots 4 of 5 What gases make up biogas? Methane, carbon dioxide, water vapour, hydrogen and hydrogen sulfide 5 of 5
Summary notes on Nervous system and hormones- topic 1a biology gcse 5.0 / 5 based on 1 rating Teacher recommended
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