death of the aquatic beings. Insecticides‚ pesticides and ripening chemicals that are used on plants run into the ground water system or nearby streams. Washing clothes near lakes and rivers causes detergents also causes a condition called “Eutrophication” which blocks sunlight from entering inside and reduces oxygen values in the water causing an inhabitable environment. Certain natural disasters like flash floods and hurricanes cause the intermixing of water with harmful substances on the land
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Man’s Effect on the Environment 1) SOURCES OF POLLUTION Freshwater Environments : Man pollutes freshwater all over the world in many ways there is much waste and pollution that ends up in rivers. One of the main hazards is called eutrophication‚ this process becomes enriched with artificial nutrients from fertilisers which run off into the rivers and upset the natural nutrient cycle of the river‚ lake or pond. The water turns green because of the algae which when they die multifly using
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Freshwater Aquatic Ecosystems This paper will discuss freshwater aquatic ecosystem. It will identify impacts associated with agriculture‚ the effects that a growing human population may have on that ecosystem’s resources‚ including loss or harm to populations of wild species‚ sustainability and conservation of natural resources in freshwater aquatic ecosystem‚ risks and benefits of extracting or using one type of nonrenewable and one type of renewable energy resource‚ assess management practices
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THE UNIVERSITY OF HULL Department of Biological Sciences Level Six Examination May/June 2012 Freshwater Fisheries and Conservation Wednesday 30th May 2012‚ 1.30 – 3.30 p.m. 2 hours Answer THREE questions Use a separate book for each answer Use diagrams where appropriate Where shown the % indicates the mark distribution within a question Do not open or turn over this exam paper‚ or start to write anything until told to by the Invigilator. Starting to write before permitted to do so may be
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death of the aquatic beings. Insecticides‚ pesticides and ripening chemicals that are used on plants run into the ground water system or nearby streams. Washing clothes near lakes and rivers causes detergents also causes a condition called “Eutrophication” which blocks sunlight from entering inside and reduces oxygen values in the water causing an inhabitable environment. ‘Oil Spills’ are caused when giant oil tankers and oil rigs which are present in the oceans are damaged by either natural or
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Using named examples‚ assess the contribution of large scale water management projects in increasing water security. 15 Water security means having access to sufficient‚ safe‚ clean and affordable water. Theoretically‚ the world’s poorer countries are the most water insecure‚ suffering from both physical and economic water scarcity. One solution to tackle water insecurity is through large scale water projects for example the Three Gorges project in China‚ the South-North transfer project also in
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How can leaders tackle with water pollution in China? Introduction 3 main causes of water pollution in China: 1. Rapid industrialisation 2. Urbanisation 3. Modified and intense agricultural activities Control of water pollution The National Five-year Plan for Environmental Protection Circular Economy Pollution Law Law of the People’s Republic of China on Prevention and Control of Water Pollution Conclusion Introduction Various local and foreign media institutes have reported the serious
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crops by rain. The contaminated water enters the soil‚ and eventually makes its way into our river systems by filtering through the soil or by direct run-off‚ and finally ends up in the sea. When these pesticides get into water bodies they cause “eutrophication” which is the growth of excess algae in the water . These algae tend to compete with the living aquatic organisms in the water bodies for the available oxygen resulting to the death of some aquatic organisms. POPs do not readily break down; they
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Descriptive language assists in the creation of the visual scene of a green sea‚ which is an abnormal colour symbolising pollution‚ illness and infection‚ in reference to eutrophication. Furthermore‚ the connection made of the "sea" and "GAS" also constructs and allows a relationship between liquid and gas as a person is totally surround by a uniform disease. Moreover‚ this representation of suffering personifies the gas as a
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AST20211 Environment and Health UNIT 1: INTRODUCTION OF ENVIRONMENTAL HEALTH Definition of Environment‚ Health and Disease Environmental Problems Food Borne Diseases Intervention and Control AST20211 Environment and Health What is environment…? • The sum total of our surroundings‚ including all the living and nonliving things with which we interact. • Living things • Animals‚ plants‚ forests‚ fungi‚ etc. • Nonliving things • Continents‚ oceans‚ clouds‚ soil‚ rocks •
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