Pesticides are frequently used for controlling pests in agricultural field but they also enter into aquatic system and ultimately affect non-target organism like fish very adversely.Profenofos a well known organophosphate pesticide is a potential toxicant polluting the aquatic system which has been in agricultural use for controlling pests . The present study is aimed to assess the histopathological impact of lethal (0.3 parts per million (ppm)) and sub lethal (0.06 parts per million (ppm))
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Resources are defined as a means of meeting a need‚ particularly an economic or social need‚ of the people. The term usually refers to natural resources like land‚ water‚ air. Natural resources are largely unchanged materials of the land that are valuable to people and used in variety of ways. Pakistan is rich in natural resources. It has mountains‚ plains‚ deserts‚ fertile soils‚ rivers and oceans. Natural Resources are very important for the development and prosperity of a country. The important
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The Grand Canyon has been a natural marvel for thousands of years. Many have wondered how this natural phenomenon occurred and when it started to become the wonder it is today. There are several theories on how this incredible rock structure was formed‚ the soundest theory relies on the environment that surrounds these rocks. The most powerful force on the Grand Canyon is erosion‚ primarily by water‚ according to The Seven Natural Wonders‚ a data base for the natural wonders of the world. The Colorado
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Abstract: Soil serves as one of the basic medium of life as a variety of elements‚ which are vital to life are embedded in it. However‚ the human activities are polluting the soil unintentionally. Consequently‚ a wide range of contaminants enter the soil. Nevertheless‚ heavy metals are the most toxic of all the pollutants. Among these‚ lead‚ cadmium‚ chromium‚ mercury and arsenic are most toxic and can cause multiple organ damages even when present in small amount. Although‚ these elements are necessary
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In Ch 4 of Silent Spring‚ Carson brings about the fact that the most essential natural resource in the world‚ water‚ is being contaminated. With every spray and use of the pesticides and human-made chemicals‚ persistent as they are‚ the resulting effects spread throughout ecosystems. Bioaccumulation occurs through the levels of the food chain(biological magnification)‚ microorganisms and fish are exposed to the chemicals that render the water polluted‚ fish are eaten by birds and other aquatic life
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The Sacramento River Originating in the Klamath Mountains‚ the Sacramento River is the largest river in California‚ draining over 70‚000 kilometers. Located within Northern and Central California‚ the Sacramento River flows south for about 412 kilometers until it reaches the San Francisco Bay and the Sacramento-San Joaquin River Delta. The Sacramento River runs through 19 Californian counties‚ being bounded by Sierra Nevada and Coast Rangers‚ area known as the Sacramento Valley. For about 12‚000
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Lab 2 – Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination Table 1: Water Observations (Smell‚ Color‚ Etc.) Beaker Observations 1 Clear no smell 2 Oil was on top and did not mix with water and it had a slight smell 3 A slight haze look to water with strong smell of vinegar 4 Water turned cloudy with bubbles on top and was the hardest to see through 5 100 ml of water filtered through 60 ml soil resulted in slight brown soil colored water 6 100 ml water
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“A drought has happened in St Eustacia for the past 2 years. Brainstorm and then draft an essay on the effects of the drought on St Eustacians.” Name: Ashlee Waldron Course Code: #413001354 Tutor: Margaret Gill Course Code: FOUN 0100 Course Name: Fundamental of Written English Section: 8 Due date: Wednesday 15th‚ 2014 Essay Outline I. Introduction Thesis Statement: Living
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Lab 2 – Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination Table 1: Water Observations (Smell‚ Color‚ Etc.) Beaker Observations 1 Water is clear and uncontaminated. 2 All of the vegetable oil goes to the top of the beaker. 3 The water looks slightly cloudy but not too contaminated. 4 The water changed colors with the detergent and was clearly contaminated. 5 Water was murky from the dirt. 6 The water did not look as contaminated filtering with oil as it did with
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The Working Memory Model (WMM) is a theory by Baddeley and Hitch in 1974. The theory replaces the idea that there is a single Short Term Memory (STM) from Atkinson and Shiffrin (1968)‚ it suggests that the STM is a flexible multi-component system. The WMM suggests that the STM is controlled by the Central Executive (CE) which controls attention‚ planning and synthesising information. The Central Executive is a flexible system which means it can process audio‚ visual and sound information‚ it also
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