1 s CHAPTER I INTRODUCTION BACKGROUND OF THE STUDY Crabs are decapod crustaceans which typically have a short projecting tail. They are found in all of the world’s oceans‚ some found in freshwater and some on land. Crabs make up 20% of all marine crustaceans caught‚ farmed‚ and consumed worldwide‚ amounting to 1½ million tons annually (Chin‚ W. & Ng‚ P.‚ 1994). Varuna literrata.‚ Family Grapsidae are euryhaline meaning that they can both live
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commonly used de-icing agent (Road salting). Sometimes‚ it can be used along with some anti-caking agents like sodium hexacyanoferrate (II) or sand and grits. These elements like sodium‚ chloride‚ ferrocyanide and other impurities seep into our environment when the snow or ice melts‚ and poses a threat to water bodies‚ soil‚ vegetation and large number of species sustaining on them (Environmental‚ Health and Economic Impacts of Road Salt). De-icing of the roads is‚ beyond a doubt‚ very essential‚
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Human Cloning: The Negative Effects on Society Human cloning is possible but also dangerous to society. One day during an assembly in March 1977‚ a heated debate began over the topic of human cloning. Both sides were getting very involved in the argument. Suddenly a group of protestors stormed the stage. They were protesting human cloning while chanting‚ "We shall not be cloned!" During the protest the group held up a sign that said: "We will create the perfect race Adolf Hitler" (Lester and
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Hui Tzu(Erin) Wang ID:0720052 Effect of an Increasing Substrate Concentration on Enzyme Activity Rate Abstract The reaction rate of an enzyme can be affected by many factors‚ and the purpose of this experiment was to find out how an increasing substrate concentration influences the rate of an enzyme activity; we obtained data from recording the absorbance of the samples which contain the same amount of potato juice (enzyme oxidase) and different
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1 WHAT IS CLIMATE CH ANGE? 1.1 INTRODUCTION Scientists around the world now agree that the climatic changes occurring internationally are the result of human activity. Although responsibility for the causes of climate change rests primarily with the developed and industrialised nations‚ the costs of climate change will be borne most directly by the poor. This is for a number of reasons‚ including: •many of the regions most likely to be adversely affected fall in the developing world; •the poor
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and augmenting one’s chance of organ failure. Overconsumption of sugar places the human body under severe risk for death. Doctors have found that added sugar intake has potential to lead to heart disease‚ which can ultimately be fatal. After a study in 2010‚ it was discovered “on average‚ adults in the USA consumed about 300 calories a day‚ based on a 2‚000-calorie
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exploitation of natural resources. In turn‚ the conventional sources of energy we use today cause pollution‚ so economic growth is almost inevitably associated with environmental damage. One of the aspects of economic growth which affects the environment most of all is that‚ in order to produce more goods and products‚ at a faster rate‚ the construction of large industrial plants is required. These enterprises generate a lot of waste in the form of liquid waste and gaseous fumes. The liquid waste
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The Ultimate Anti-Aging: Effects of Exercise to Telomerase Activity Abstract Exercise or constant activity has always been the last word or among the first recommendations in countering the signs of aging. The aging that has been associated with exercise is termed as biological age and is used to mean as our age that is physiological rather than chronological‚ and it includes factors like changes in the physical structure of the body as well as changes in the performance of motor skills and sensory
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Harmful habits of human beings that threaten our environment We have one earth and also one environment on earth. We should care for it and we should cooperate together to keep it carefully to deliver it to next generations. Unfortunately some human’s activities threaten our earth and our environment. Main harmful habits that threaten our environment are burning fossil fuel‚ polluting environment with garbage and destroying forests. Burning fossil fuel is one of harmful activities that threaten our
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EFFECTS OF CENTRAL RIFT GEOLOGICAL FORMATION ON ECONOMIC ACTIVITIES a) Farming At the floor of the central rift‚ the volcanic soils that have been eroded from the top of the mountains like menengai‚ has been put into use through farming. There is wheat farming in Nakuru‚ maize plantations‚ Irish potato growing in the central rift due to fertile soils which support the growth of the crops. Also there is tea growing in Kericho as a result of its favourable physical factors such as climate‚ rainfall
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