BEGE - 102 Solved Assignment 2012-2013 1. State whether the following statements are true or false. (10) I. Phonology is a study of the word pattern of a language ans) False II. According to the British R.P‚ there are 8 pure vowels and 12 dipthongs ans) False III. A diphthong is a combination of any two vowels produced one after the other ans) True IV. There are only two semi-vowels in English ans) True V. There are only two nasal-consonants in English ans) False VI
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Sustainability has been defined as “meeting the needs of the present generation without compromising the ability for future generations to meet their own needs”. Sustainable development comes down to three core features of environmental protection‚ economic development and social progress. To improve sustainability around the world people have been encouraged to reduce their ‘footprint’ on the planet. There are key strategies to reduce the human ‘footprint’ on the globe‚ some of these are recycling
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the more likely that investment would serve as a strategic commitment. 3. Explain why prices are usually strategic complements and capacities are usually strategic substitutes. If an increase (decrease) in a particular action on the part of one firm is met by an increase (decrease) in the same action on the part of another firm‚ than the actions are said to be strategic complements. If two firms sell identical products and one firm lowers its price‚ the other firm will lose many of its customers
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Chapter 1 INTRODUCTION Azolla (mosquito fern‚ duckweed fern‚ fairy moss‚ and water fern) is a genus of seven species of aquatic ferns in the family Salviniaceae. They are extremely reduced in form and specialized‚ looking nothing like conventional ferns but more resembling duckweed or some mosses. Azolla is a free floating aquatic fern‚ which nowadays can be found in freshwater environments in temperate and tropical regions all over the world. It ranks among the fastest growing plants on Earth
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phosphorus‚ sulphur and nitrogen. This essay covers sulphur and nitrogen cycles. Nitrogen Fixation The fixation of the nitrogen is crucial for the terrestrial plants. Nitrogen fixation in other words is the process of conversion of atmospheric nitrogen in to a form that growing plants can use. A little number of conversion occur in lightning strikes‚ all the rest is done by bacteria. Nitrogen fixation is done by many types of cyanobacteria‚ which are photosynthetic‚ and various types of non-photosynthetic
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involved. The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms. This transformation can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation‚ ammonification‚ nitrification‚ and denitrification. The majority of Earth’s atmosphere (78%) is nitrogen‚ making it the largest pool of nitrogen. However‚ atmospheric nitrogen has limited availability for biological use‚ leading to a scarcity of
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------------------------------------------------- The Processes of the nitrogen cycle Nitrogen fixation Atmospheric nitrogen must be processed‚ or "fixed" (see page on nitrogen fixation)‚ in order to be used by plants. Some fixation occurs in lightning strikes‚ but most fixation is done by free-living or symbiotic bacteria. These bacteria have the nitrogenase enzyme that combines gaseous nitrogen with hydrogen to produce ammonia‚ which is then further converted by the bacteria to make their own organic
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Environment: The Science Behind the Stories‚ 4e (Withgott) Chapter 5 Environmental Systems and Ecosystem Ecology 5.1 Graph and Figure Interpretation Questions Use Figure 5.1 to answer the following questions. 1) This graph helps to explain ________. A) why the open ocean is so productive B) why cultivated lands are a logical choice to replace rainforests C) why we need to be concerned with damage to rainforests and coral reefs D) why tundra has such high net primary productivity
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symbiotic. Oxygen is used in the mitochondria of plant cells. Symbiotic hemoglobin known as leghemoglobin‚ is foun"d in the root nodules of leguminous plants. Leghemoglobin functions as an oxygen carrying red pigment caused by symbiotic nitrogen fixation. The nitrogen fixing bacteria Rhizobia is what affects the roots of the plants causing leghemoglobin to be produced as a part of the symbiotic interaction between the bacterium and the plants. Leghemoglobin supplies the respiring bacterium cells
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An ecosystem is a biological environment consisting of all the organisms living in a particular area‚ as well as all the nonliving or abiotic‚ physical components of the environment with which the organisms interact‚ such as air‚ soil‚ water and sunlight. In a typical ecosystem‚ plants and other photosynthetic organisms are the producers that provide the food. (Leibold) Ecosystems can be permanent or temporary and they usually form a number of food webs. Examples of ecosystem include: Marine Ecosystems:
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