Conservation Of Wild Life forests Protection and conservation of forests and wildlife are essential to maintain the earth’s health and environment. The earth is the only known living planet and it is because of its special environment and ecology which are life-supporting. Forests are part and parcel of our environment. They are one of the most valuable resources and gifts of nature. They play a key role in the maintenance climate‚ rain-patterns‚ water and soil conservation. They are the natural
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ABUNDANCE AND DIVERSITY OF TOP SOIL EARTHWORMS IN RELATION TO CHEMICAL USE IN GOLDEN ROSE AGROFARM‚ TEFKI AREA‚ ETHIOPIA By Addisu Mergia Addis Ababa University School of graduate Studies Department of Biology A thesis submitted to the School of Graduate studies of Addis Ababa University in partial fulfillment of the requirement for the Degree of Master of Science in Biology July‚ 2007 Dedication This work is dedicated to my father who let the ground for my current educational careers‚ but not
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I. INTRODUCTION Earthworms are segmented invertebrates that inhabit soils and organic wastes. They are hermaphrodites and usually reproduce by mating‚ each partner fertilizing the other. After mating they retract their bodies through the “saddle” or clitellum and pass it over their heads. Each cocoon contains one or more eggs that can survive adverse conditions‚ hatching when environmental conditions are favorable. Some species are able to produce viable cocoons parthenogenetically without
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the earthworms and the pigeons traits. Charles studies the earthworms because he was a naturalist‚ an expert in geology. Darwin enjoyed learning and studying about earthworms. He mostly studied the worm’s traits‚ what food the worm eat‚ hearing‚ and sight. Darwin’ father knew he couldn’t do this experiment‚ so Charles had to prove him wrong. Darwin started with the light experiment‚ he placed a earthworm under a heating lamp to see the redness on top the head. After he studies the earthworms‚ he
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When Jamestown‚ which did not have any earthworms before because of the most recent ice age‚ was introduced to these creatures‚ the place received healthy soil and appropriate conditions for agriculture. Earthworms created massive network of tunnels by eating through the soil beneath the ground‚ making it able to let in air and water. These two elements are required for healthier soil. Temperature in Virginia can make the earthworms “Turn over the upper foot of soil” every few decades
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Taxonomists have divided the animal kingdom into about 35 phyla (Solomon et al.‚ 2011). Out of these‚ phylum Annelidia composed of about 15‚000 species which is further divided into 3 main classes – the Polychaeta (marine worms)‚ the Oligochaeta (earthworms and freshwater worms) and the Hirudinida (leeches). On the other hand‚ phylum Arthropoda is the largest animal phylum which is composed of millions of species with more than a million being described (Solomon et al.‚ 2011). This phylum is further
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minuscule that it must be amplified in order to be visible on the oscilloscope. In this experiment‚ we will determine and compare the conduction velocities of different types of nerves. We will examine four nerves: an earthworm nerve‚ a frog nerve‚ and two rat nerves. The earthworm is the smallest; the frog nerve is a medium-sized myelinated nerve‚ Rat nerve 1 is medium-sized
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with over 22‚000 modern species including ragworms‚ earthworms and leeches. They are found in marine environments from tidal zones to hydrothermal vents‚ in freshwater‚ and in moist terrestrial environments.They are bilaterally symmetrical‚ triploblastic‚ coelomate organisms.They have parapodia for locomotion. Although most textbooks still use the traditional division into polychaetes (almost all marine)‚ oligochaetes (which include earthworms) and leech-like species‚ research since 1997 has radically
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Jheon Webb Earth Science Mr. Tokarski Article Summary Earthworms‚ ants‚ termites: The real engineers of the ecosystem Date:October 23‚ 2014 Source: Investigación y Desarrollo The topic of Earth Science that this article falls under is soil science. The contribution or advantage of having a home garden is the preservation of biodiversity‚ or the diversity among and within plant and animal species in an environment. Economics and human health prompted a multidisciplinary group
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and reproductive organs. Phylum Annelida This phylum is divided into three classes: Oligochaeta: Earthworms - Most earthworms and their equals are inhabitants of damp soil and fresh waters. Hirudinea: Leeches - The leeches are found mainly in fresh water or on moist ground. Polychaeta: Bristle-worms - The marine worms are found chiefly in close vicinity of the shore. • OLIGOCHAETA = Earthworms • HIRUDINEA = Leeches • POLYCHAETA = Bristle-worms Some annelids are free-living‚ many inhabit
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