density of stomata in the upper and lower epidermis of a dicotyledonous leaf. Stomata are the principle means of gas exchange in plants. Stomata are small pores they are controlled by guard cells which control the opening and closing of stomata. Stomata allow carbon dioxide to enter the plant‚ and allow water and excess oxygen to escape. About 90% of water is lost from the leaf during transpiration. The number of stomata on leaf surface varies among different species. The lower epidermis tends to
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CHARACTERS Sue -loving -caring she always taking care of Johnsy Johnsy - sick - easily give up she think she is going to die when the last leaf fall down from the tree she keep counting the leaf. Doctor - busy - kind he have lots of patient to take care of. he was always kind to Johnsy. Mr.Behrman -old -painter he was past sixty at last he painted a great masterpiece‚ Mr.Pneumonia -old gentleman - bad he was not a nice old gentleman he was bad because he hurt a weak
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Literature can teach innumerable valuable lessons. In “Gwilan’s Harp” the protagonist goes through hard situations‚ but she manages to keep a positive attitude through it. In “The Last Leaf” the main character must help her best friend through difficult times. The central figure in “The Last Leaf” helps her friend no matter what. In “The Washwoman” the lead character goes through hard times; nevertheless she does not give up. All these short stories teach valuable life lessons through their
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Thin-Layer Chromatography of Analgesics Abstract: In this experiment thin-layer chromatography (TLC) was used to determine the composition of an unknown mixture of analgesics given five references of AC‚ ASP‚ CAF‚ IBU‚ SAL‚ an unknown consisting of a mixture of three of the references‚ and two unknowns (6‚23) containing a single reference compound. The composition of the unknown mixture and two single unknowns were determined by spotting the reference compounds and the unknown compounds on two
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Recent Breakthrough - “Artificial Leaf” In the past 3 million years‚ the levels of atmospheric carbon dioxide have been at their highest ever. With the more relatively recent beginning of the Industrial Age‚ the amount of clean‚ breathable air that humanity depends upon for survival‚ has‚ as a response to the Era‚ decreased. The increase in carbon emissions and the increasing dependence upon fossil-fuels for energy has led to a global race for the creation of a carbon-neutral‚ renewable energy
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The “Maple Leaf Rag” by Scott Joplin‚ is one of the most famous ragtime music known in modern times. The song is reminiscent of the last time I went to Disneyland‚ and is played commonly there by the pianists employed there having shows‚ which brings back good memories‚ therefore‚ making me biassed to say that it makes me feel happy and excited. Like ragtime is is known today‚ the tune is all solo piano‚ no vocals. The tune is upbeat and fast‚ and you can hear a lot of moving up and down the scale
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"The Last Leaf" by O. Henry is an interesting short story about a sick girl who is deeply affected by a bare ivy vine. Johnsy thinks that she will die as soon as the last leaf on that vine falls. She becomes close to death‚ but a neighbor called Mr. Behrman‚ an artist‚ saves her life and dies. This paper will focus on different causes and effects involved in‚ first‚ Johnsy’s case and‚ second‚ the death of Mr. Behrman. First‚ many things lead Johnsy to be touched with the idea of death. When Johnsy
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Group 4 Outline Exercise 1: Listen to advice of international students about culture shock. Exercise 2: Listen to report of sport A: Fill in the blank B: Chose true (T)‚ false (F) or not given (NG) Exercise 3: Listen to song and fill the blanks. Exercise 4: Listen a suggestion. Exercise 1: You are going to hear an international student adviser giving advice on culture shock. Listen and complete the notes below using NO MORE THAN THREE WORDS for each answer
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19‚ October 2010 Fitzgerald‚ Prompt 1 Introduction A. Intro hook‚ Quote from honeymooners B. Thesis statement: Gender roles in “A New Leaf” portray men as the providers and dominant‚ females as subordinate caretakers‚ and it vastly limits decision making to choices that are deemed “appropriate” for men and women alike. How are male and female characters portrayed? A. Women – Caretakers‚ nurturing‚ invested into beauty B. Men-Providers‚ indestructible‚ intelligent
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Separations: Chromatography of M&M and Ink Dyes Almost all substances we come into contact with on a daily basis are impure; that is‚ they are mixtures. Similarly‚ compounds synthesized in the chemical laboratory are rarely produced pure. As a result‚ a major focus of research in chemistry is designing methods of separating and identifying components of mixtures. Many separation methods rely on physical differences between the components of a mixture. For example‚ filtration takes advantage of substances
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