“Light Pollution” is a form of environmental pollution in which excessive artificial outdoor lightings affect the natural environment. Light pollution in Hong Kong is very serious. The main reason behind that are the artificial outdoor lightings. As there are many buildings scattered in Hong Kong‚ artificial lighting is omnipresent. The severe light pollution reduces the number of stars that are visible in the sky. The HKSAR Electrical and Mechanical Services Department‚ 20% of the total electrical
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Through this experiment‚ Egeria densa was observed using a microscope. The task was to observe and identify the different types of cell‚ cytoplasmic streaming‚ and plasmolysis of Egeria densa. First‚ the microscope was examined and investigated to master the use of the equipment. A microscope slide grid which was on the slide glass was required to be seen clearly using 4x‚ 10x and 30x. During the latter part of the experiment‚ the Egeria densa was observed using the microscope to understand the
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DoE Physical Sciences Feb-March Paper 2 2009) Antacids are used to relieve indigestion. Indigestion is the condition when the stomach produces too much acid resulting in an uncomfortable and painful feeling. A certain antacid tablet dissolves in water and reacts with the acid in the stomach to release carbon dioxide gas. 1.1 Name the type of chemical reaction that explains why antacids bring relief from indigestion. (1) 1.2 A group of learners wants to investigate the effect of temperature
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Cause and effect essay on Immigration Consistently‚ the quantity of immigrants increments in the world. Numerous individuals start to leave their own particular nation which is their country looking for the nations which are easier for them to live. It appears that there are such a variety of genuine reasons that make them choose to repudiate their country‚ and the reasons are profoundly included in their life surroundings. One individual might need to discover a work to bolster his family in remote
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Science Fiction essay Science fiction writers clearly find that controlling governments can be dangerous and that these governments attempt to control by limiting information and knowledge. Firstly‚ in the “The Obsolete Man‚” the government controls books by getting rid of them and controls religion by destroying of the idea of God. The Chancellor stated “ ‘The state has proven there is no god.’ ” (The Obsolete Man). In addition‚ the people in “There Will Come Soft Rain‚” the family was having
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Light Pollution 1. Every urbanite knows the bright lights of the city make it impossible to see the stars in a night sky. What most of us do not know is that those lights also may be making us sick. The cause is light pollution – the unearthly glow of billions of street lamps‚ security and porch lights‚ searchlights‚ office lights and signs – as people everywhere try to dispel the darkness of the night. 2. For the first time‚ light is being investigated seriously as a pollutant and a health hazard
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What is the Effect of the Colour of Light on the Rate of Photosynthesis? By Amelia Rowan‚ 12SDa Aim To discover whether the colour of the light source has any effect on the rate of photosynthesis of a sample of algae. Hypothesis It was predicted that the colour of the light source would have a very slight effect on the rate of photosynthesis. It was further predicted that when the sample was placed under the green light‚ the rate of photosynthesis would be the lowest. This hypothesis was arrived
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Photosynthesis notes -sunlight brings energy to Earth -the energy in sunlight is packaged in photons -the photosystems in the thylakoid membrane capture photons -pigments in the photosystems have an antenna complex that actually grabs the photons -chlorophyll b captures the photons and transfers the energy to chlorophyll a (the reaction center) -when the reaction center receives the energy it donates an electron -the donated electron will move down the electron transport system (ETS) -ETS
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the western standard so that eastern pictures are low-evaluated. At the moment‚ I find myself to know nothing about eastern painting‚ even though I am one of the eastern people. I have learned lots of famous western pictures since middle and high school; on the contrary‚ no one explained the difference point of view between eastern and western painting. I have little information about eastern picture. Thus‚ I decide to compare and analyze the difference of each painting at this chance. Comparison
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When I was very young‚ my science teacher taught me Charles Darwin’s evolution theory‚ and I never doubted that theory since Darwin is a well-known scientist and the authority in the field of biology. Until one day‚ I became a Christian; I need to accept another theory which is that human beings are created by God. My knowledge had a crash. I have never seen neither earlier species develop to human beings nor God creates human beings by using mud. That is when I started to question the knowledge
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