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Essays in Zoology category
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The Concept of a Species.
... definition is also known as the biological species concept (BSC). Advocates of the BSC say that forms that are only slightly different (for example different geographical forms) may interbreed if they had the opportunity. Therefore they should be considered as ...
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The diversity of protoctist cell shape, arrangement and size
... feeding, the flagella are positioned around specialised areas of the cell (a gullet) and push food towards or into this gullet (fig 2.7, Ridge 2001) Although most cells have one nucleus (fig 1), many have more. This can range from two, ...
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The effects of deforestation on animal suffering
... one. Place all that data together, and you're not likely to have much left within a hundred years. It is said that "If the world continues at the current rate of deforestation, the world's rainforests will be gone within 100 ...
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The environmental problems associated
with using agricultural chemicals
... kilograms per hectare is deposited onto forest soil in the Netherlands. (5) This amount is roughly as much as is spread on intensively farmed fields and shows that not only agriculture is a main source but also forestry. A build ...
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The Evolution of Man.
... question is why are we humans controlling the planet? Why aren't some big furry animals controlling it? We attribute this to the severe climate change. It is said that as the world got colder, the human species had to learn ...
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The following is a letter to the editor of an environmental magazine.
... most severe problem with this letter is that the arguer fails to establish a causal relationship between the decrease of the amphibians' number and the global pollution of water and air. The pollution of the water and air may lead ...
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The general consensus in the evolution of humankind is that homo-erectus species were originally from the land of Africa
... evolution of homo-erectus to homo-sapiens in Africa, the modern humans migrated out to all other parts of the world with some leaving behind to live. These modern human populations took over the regions that they migrated to from the local ...
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The grasslands of North American are called as prairies; they cover about 1.4 million square miles or 15% of the continent.
... soils, but due to developing agriculture large soil erosions occurred affecting the fertility of soils. The frost-free season in prairie averages 100 - 300 days a year. Climate of the eastern part of tall grass zone is gentle, summers are humid ...
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The Great Salt Lake.
... Great Basin Desert covers much of Idaho, Nevada, and Utah. The Great Salt Lake was once part of ancient Lake Bonneville, a massive fresh water lake that existed between thirty-two and fourteen thousand years ago. At its largest extent, Lake ...
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The Hare and the Tortoise - The Modern Day Version
... friend." "Come on, stumpy," goaded the hare, "can't you rise up when someone (huff-huff) throws down the gauntlet?" "I can't see how gauntlet abuse has anything to do with me," said the tortoise, who had apparently achieved slowness in more ...
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The Human/Animal Relationship
... reflection of the more scientific mentality that accompanied the Enlightment, Before this change in legal stance, animals were often thought of as representing the power of nature but as technological advancements rendered nature increasingly under the control of humans it ...
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The Inuit society - the cause of change
... of subsistence hunting and examine the nature and impact of the changes that resulted from contacts with outsiders" (Rasing 1999: 81). Before the Inuit's became dependent on the western world, they lived in an isolated state. They were dependent solely ...
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The Lion King - Study the opening scenes of the film and describe how the media techniques are used to prepare the viewer for the rest of the film.
... the sun slowly rises bringing light to the world. It is the dawn of a new day and a new beginning. The African chant music filters through the speakers introducing the sweet sounds of the jungle. As the music increases ...
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The Medicinal Potential of the Poison Dart Frog.
... genus, which contain a small brown frog, and Aromabates, which consist of one nocturnal aquatic species, however these do not contain lipophilic skin alkaloids. Phyllobates consist of five frogs that produce steroidal alkaloids of batrachotoxin class, where as dendrobates do ...
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The nervous system of the Cnidarians in relation to their behaviour.
... will hold onto prey. Most species of jellyfish and anemones have nematocysts that will not harm humans, however some will. Alongside this, they use unique cnidocytes, or stinging cells, that give the phylum its name. The stinging cells can stun ...
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The poem Planning a Service by Bruce Dawe is, in my opinion, not only a very imaginative poem but also at the same time a very religious poem in the form of a fable. The meaning of this poem is very odd and
... rest of the poem, a very free and casual atmosphere. In the first sentence of the poem, a long list of the creatures that will form the congregation is given. This list makes this poem feel like a form of a ...
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The positive correlation shows that the older the molehill the higher the species diversity index. This could be explained by the fact that when the moles first push up the soil it disturbs the plants
... Plants buried under the loose soil may force their way upwards and re-establish themselves. 2. Dormant seeds in the soil may germinate due to the new conditions that the molehill has improved. New seeds, usually wind pollinated, may arrive on the ...
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The range of ways in which animals obtain their food.
... can pick up weak stimuli from the muscle contractions of bony fish, using the organs along their lateral lines and on their snouts. Many animals, such as sharks, also hunt in groups, which increases their chance of gaining a meal. ...
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The role of Zoos.
... quality to support a larger amount of animals the numbers will decline again, so the release of captive bred animals alone will have no effect on the overall natural population. This is why habitat conservation is also necessary. Research - The ...
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This House Would Ban All Experiments on Animals.
... Dosing a mouse or a rabbit with drugs won't have the same effect on humans, and the chances of these tests resulting in a cure is next-to-nothing. The most common way in which these tests are performed is by dripping ...
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This paper attempts to investigate whether the associated consequences of global warming could lead to an increase in shark attacks on water users in British coastal waters.
... increases. The study suggests that the number of shark attacks attributed to species currently found in British coastal waters is minimal but the effects of climate change will alter the distribution of fish throughout the world. If the number of ...
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This report was commissioned by Sunderland City Council to assess the ecological and educational resources available at the Tunstall Hills site.
... Vegetation Classification. The phase 1 survey had already identified two distinct areas of the woodland were identified, a semi-natural Ash woodland and a fringing area of Hawthorn scrub land. Within these areas 5 quadrates of 20m?20m were taken to sample ...
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This study attempts to explore the basis of people’s fear of animals.
... the fact that the appearance of the different animals is the strongest factor relating to the fear of them. INTRODUCTION Our study regarding the fear of small animals is a replica of the original study conducted by Bennett-Levy and Marteau; who ...
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To Hunt or Not to Hunt?
... had absolutely nothing to eat and it was your last choice on the menu or if it is the only way of obtaining meat. That would then be a means for your survival, which is necessary for all species. ...
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To what extent are molluscs a group of specialised worms?
... number of plates is unrelated to the number of gills or kidneys or other multiple organs, indicating that they could not have actually evolved from annelids as they do not show real segmentation. This is quite like the case in ...