BL11 0.0 / 5 ? BiologyHuman impact on the environmentGCSEAQA Created by: YodaIsAHobbitCreated on: 25-08-20 23:56 Deforestation Clearing of trees, transforms forests into plains 1 of 17 Peat Uncovered in deforestation, fossil fuel like ethanol in swamps 2 of 17 Biodiversity Variety of species making an ecosystem 3 of 17 Increasing population (People) More housing, mining in large areas, more food and farmland, creates waste and needs to be stored 4 of 17 Increasing population (Resources) Need more raw material, fossils fuels will run out and will pollute the Earth 5 of 17 Increasing population (Water) Waste in the water like sewage, contaminates water. Use indicator species like Mayfly indicates clean and snail means dirty 6 of 17 Increasing population (Air) To provide energy more fuels used like burning coal and oil, increases pollution 7 of 17 Greenhouse effect Sunlight hits Earth and reflects, CO2 in atmosphere trap heat and warm the Earth from fossil fuels 8 of 17 Effects of Global Warming Migration changes, species distribution change due to heat and loss of habitat due to flooding 9 of 17 Preventing Global Warming Nuclear power, renewable energy sources, Kyoto agreement reduces CO2 levels 10 of 17 Methods of conservation Breeding programmes, Protection, reduce deforestation, recycling 11 of 17 Quorn Sustainable, Mycoprotein= protein made of fungi, cheap, contains little fat, produces biomass from food faster than any animal 12 of 17 Mycoprotein Oxygen for respiration, mix microorganisms evenly to keep temperature even. Or genetically modified bacteria to increase growth 13 of 17 Intensive Farming The manner to obtain maximum yield when farming, can increase production by antibiotics and temperature or decrease food chain to keep the most energy 14 of 17 Threat to biodiversity Unsustainable fisheries and increased pollution, ecosystems could degrade and destroyed 15 of 17 Depleting fish population Over-fishing, pollution, disrupting habitats 16 of 17 Preserving fish populations Fish farms (controlled farms with high protein so less fish needed), Fishing quotas (certain amount of fish caught) 17 of 17
Summary notes on Nervous system and hormones- topic 1a biology gcse 5.0 / 5 based on 1 rating Teacher recommended
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