burning down of tropical forests ‚ traffic clogging up the city streets ‚ rapid growth of unplanned industries‚ the use of CFCs in packaging and manufacturing products‚ the use of detergents etc. cause Global Warming. Besides‚ overpopulation‚ deforestation are the causative factors of Global Warming. The setting up of mills and factories in an unplanned way has a great effect on environment. These mills and factories produce black smoke which gets mixed with air and increases the amount of CO2.
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is located on the confluences of the river Ganges and Brahmaputra and this means that Drainage density: Bangladesh is an area with high density which means there is more water flowing in the area which means that it is more likely to flood. Urbanisation and concrete: Much of the river Ganges has been diverted for irrigation‚ which increases the deposition of silt and reduces the channels capacity. This affects the river system‚ meaning there would be a high chance of flooding. Diverting flow for
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why nature? Humanity’s progress‚ particularly since the mid-19th century‚ has been largely the result of our ability to get and use what planet Earth has to offer. All told‚ the food we eat‚ the timber we cut‚ and the water we draw amounts to an astounding one-third to one-half of global ecosystem production. But humans are part of nature‚ and like every other species on the planet‚ we depend upon healthy ecosystems for our survival. Nature provides us essentials like clean water‚ food‚ medicines
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over-exploitation of forests have left the bitter taste of the fruits of prosperity. It has created a disharmony and imbalance in our ecology and environment‚ an evil that is being intensely realised now. The urbanisation and industrialisation on a vast scale‚ during the past few decades‚ have resulted in mass deforestation and depletion of the green cover. Forests are one of the priceless boons of nature‚ but human consumerism has created such a great pressure on forests that they have almost disappeared in many
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Topic 1: Ecosystems at Risk A. Ecosystems and Their Management 2. Vulnerability and Resilience of Ecosystems * Vunerability is the sensitivity of an ecosystem to cope with stress. * Resilience is the ability of an ecosystem (or a component of an ecosystem) to adapt to a changing environment and to restore function and structure following an episode of natural or human-induced stress. * All ecosystems function in a state of dynamic equilibrium or a continual state of balanced change
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are many consequences for the environment of cutting down trees. Known as deforestation it has huge effects on the environment. It one very big effect is the loss of biodiversity which is a direct effect of cutting down trees. There are many reasons of which humans act out deforestation. For example is so that we can set up cattle farms. Also grow crops of which can then be sold to people. Another reason is for urbanisation and for the building of roads. However what people don’t know as a risk of
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Global warming I N T R O D U C T I O N It’s happening everyday and right now. It is becoming a worldwide problem. This is global warming. Global warming is a serious problem that affects our planet. Is it a natural cause or man-made? It may be natural. Many people point to the melting ice caps as proof that humans are the ones that are causing global warming‚ but what they may not know is that the polar ice caps on Mars are melting too. Humans may not be the main cause of global warming but they
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Global warming is the greatest challenge facing our planet. It is‚ in fact‚ the increase in the temperature of the earth’s neon- surface air. It is one of the most current and widely discussed factors. It has far-reaching impact on biodiversity and climatic conditions of the planet. Several current trends clearly demonstrate that global warming is directly impacting on rising sea levels‚ the melting of ice caps and significant worldwide climate changes. In short‚ global warming represents a fundamental
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H A B I T A T INTL. Vol. 19‚ No. 3‚ pp. 279-292‚ 1995 Pergamon Elsevier Science Ltd Printed in Great Britain 0197-3975/95 $9.50 + 0.00 0197-3975(94)00071-9 Sustainable Development and the Construction Industry* ROBIN SPENCE and HELEN MULLIGANt Cambridge University‚ UK and tCambridge Architectural Research Limited‚ UK ABSTRACT The construction industry‚ together with the materials industries which support it‚ is one of the major global exploiters of natural resources‚ both physical
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climate‚ succession‚ disease and natural disasters. Human factors in change include; urbanisation‚ deforestation‚ cultivation and tourism. Which are arguably the most important factors in changes to vegetation. The British Isles were largely covered in deciduous forests‚ until around 5000 years ago when humans began to cut down these trees to build their homes‚ which can be seen as first stages of ‘urbanisation’. However the trees they cut down were put to use in firewood and fuel for cooking. Other
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