HISTORY AND CLASSIFICATION OF BIRDS The problems of classification of birds Has gained the attention of ornithologist and many systems have been proposed in order to establish their lineage until the beginning of the 19th century. The problem was solved in a rather over simplified way by using only significant characters especially external life forms and way of life and diet. Thus these birds whose toes are joined by welds where grouped in the natatoes. Those with long legs in the gralatories‚
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Biomes Tropical Rain Forest & Boreal Forest Locations Tropical Rain Forest • Tropic of Capricorn- 23.5° S latitude • Amazon Rainforest – Latitude above 15°N Boreal Forest • Boreal Taiga- 50° N latitude • Boreal Siberia- 34°N Latitude Abiotic Factors Tropical Rain Forest • Weather‚ climate‚ rain‚ sunlight‚ clouds‚ and soil is very poor in these areas. The Amazon river rises a lot its water is absorbed in plants for nutrients. Boreal Forest • Weather‚ Climate‚ and soil
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w w w e tr .X m eP e ap UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education .c rs om 0500/22 FIRST LANGUAGE ENGLISH Paper 2 Reading Passages (Extended) Additional Materials: * 6 1 2 9 3 6 9 5 7 9 * October/November 2011 2 hours Answer Booklet/Paper READ THESE INSTRUCTIONS FIRST If you have been given an Answer Booklet‚ follow the instructions on the front cover of the Booklet. Write your Centre number‚ candidate number and
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rain and very large areas of Siberia have been harvested since the collapse of the Soviet Union. In the last two decades‚ Afghanistan has lost over 70 per cent of its forests throughout the country. However‚ it is in the world’s great tropical rainforests where the destruction is most pronounced at the current time and where wholesale felling is having an adverse effect on biodiversity and contributing to the ongoing Holocene mass extinction. About half of the mature tropical forests‚ between 750
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Example of a mutualistic relationship An example of a mutualistic relationship in the Daintree rainforest is the relationship between the Ulysses butterfly and the pink flowered doughwood. This relationship is mutualistic because the pink flowered doughwood needs a specific insect pollinator‚ the Ulysses butterfly‚ and the Ulysses butterfly relies on the pink flowered doughwood for the nectar on which it survives‚ making them both benefit and rely on each other. Example of a commensal relationship
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its bark. several trees will only be known by their flowers. Despite these variations‚ each of the 3 largest rainforests‚ the American‚ the African‚ and also the Asian--has a unique cluster of animal and plant species. every rain forest has several species of monkeys‚ all of that dissent from the species of the opposite 2 rain forests. additionally‚ different areas of a similar rainforest could have different
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Causes and consequences of reduced biodiversity in tropical rain forests In many tropical countries‚ the majority of deforestation results from the actions of poor subsistence cultivators. However‚ in Brazil only about one-third of recent deforestation can be linked to cultivators. A large portion of deforestation in Brazil can be attributed to land clearing for pastureland by commercial and speculative interests‚ misguided government policies‚ inappropriate World Bank projects‚ and commercial exploitation
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Karipuna‚ the people who Salge has interviewed‚ is an Indigenous community in the state of Rondônia in Brazil with 58 members remaining‚ living in an officially protected area in the hear of the Amazon rainforest. Surrounded by numerous cattle farms and destroyed rainforest‚ they have become more and more vulnerable to constant death threats. With that being said‚ the Karipuna has constantly received death threats and blackmails from the logging industry. A colossal size of forest about
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Earth without forests is a picture that most of humankind could not presently conceive. Unfortunately‚ the Amazon Rainforest is on this path of devastation. With more than half of the world’s biodiversity in rainforests across the world and about 20% of the world’s oxygen produced by the Amazon‚ it is vital that the threat of deforestation comes to an end. It is widely known that trees across the globe are disappearing‚ but much of the general public is uninformed how urgent and serious the threats
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This combination of specialisation and interdependence increases the overall fragility and vulnerability of this biome Fragile environments can be exploited in different ways‚ and for different reasons. For example the Amazon Rainforest‚ an equatorial tropical rainforest biome‚ has been significantly exploited for its agricultural potential and natural resources; cattle ranching‚ soya bean and palm oil plantations‚ mining and timber. The most significant consequence of these forms of exploitation
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