Crossword 3.0 / 5 based on 1 rating ? BiologyHuman impact on the environmentGCSEAQA Created by: 11amabbottCreated on: 05-08-15 09:59 92734856110 Across 1. The process by which excessive nutrients in water lead to very fast plant growth. When the plants die they are decomposed and this uses up a lot of oxygen so the water can no longer sustain animal life (14) 5. A combination of bodily waste, waste water from homes and rainfall (6) 7. Something which cannot be replaced once it is used up (3, 9) 10. Methods of producing food which can be sustained over time without destroying the fertility of the land or ocean (11) Down 2. Warming of the Earth due to greenhouse gases in the atmosphere trapping infrared radiation from the surface. (6, 7) 3. Releases heat energy. (10) 4. The trapping of infrared radiation from the Sun as a result of greenhouse gases, such as carbon dioxide and methane, in the Earth’s atmosphere. The greenhouse effect maintains the surface of the Earth at a temperature suitable for life. (10, 6) 6. A substance provided for plants that supplies them with essential nutrients for healthy growth. (10) 8. Rain that is acidic due to dissolved gases, such as sulphur dioxide, produced by the burning of fossil fuels (4, 4) 9. Waste produced by industrial processes (10, 5)
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