Role of mycorrhizas in the mineral nutrition of host plants Mycorrhizas are very important in the uptake of nutrients such as P‚ N‚ K‚ Cu‚ Zn and Ca by plants especially in soils low in these nutrients. Since P is the most limiting nutrient in tropical soils‚ mycorrhizas are vital for improving P nutrition particularly for cultivated plants. External hyphae can absorb and translocate P to the host from soil outside the root depletion zone. The thin mycorrhizal hyphae (2-4 μm in diameter) are able
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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 at by taking into account the theory of
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Photosynthesis is the process which plants use to change Carbon Dioxide and water into sugar by using the sunlight. Photosynthesis usually take place in plants cell such as chloroplast. In this lab experiment‚ we used sodium bicarbonate to influence photosynthesis. Sodium bicarbonate is a formula of NaHCO3 (baking soda). In this lab experiment‚ we observed photosynthesis in spinach leave and investigated the effect of sodium bicarbonate on photosynthesis. The experiment was to determine how many
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The story‚ titled Winter‚ follows a sixteen year old girl named Winter on her path of personal growth. Her return to her home town of Warriewood‚ sparks a chain of cataclysmic events that cause Winter to explore the mysteries of her shadowed past; thus guiding her along her personal journey of growth. Winter starts as a person who hides her feelings and by the end of the story she is able to express herself. After discovering this new way of expressing herself‚ Winter begins to open up to people
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Effects on Human Beings In today’s society‚ there are many opinions about certain topics‚ such as illegal substances‚ that differ from one person to another. Those opinions‚ sadly‚ are shaped mostly by things that one hears or sees. However‚ fallacies have become extremely common nowadays. This is why people should always analyze the information they receive before actually believing it. In fact‚ there are many people that still believe that cannabis is one of the worse drugs on earth. Well‚ believe
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Unit 1: Introduction to Biochemistry Lesson 1-4: Key Question How many electrons does Mg2+ have? (1 mark) Mg2+ has 10 electrons. A magnesium atom has 12 electrons with 2 of the 12 being valence electrons. Therefore the atom will lose the valence electrons which are located on the outermost shell to stabilize itself (outermost shell) as atoms tend to do what it easiest. Since magnesium lost 2 electrons it becomes positive as it is giving away electrons to stabilize other atoms. Hence magnesium
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Education For All What does education have to do with curing increasing poverty? Education is not about how well you do at school. It is a mean to explore the fast passed world around us. An educated person can differentiate among right and wrong. It is the foremost obligation of a society to edify its residents. Educating woman can be an asset to the society as educating them can bring about a lot of difference in the society as a whole. It is the illiterate people who take away the right of education
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How Does the Stock Market Affect the Economy? This article examines how the stock prices affect the GDP. “According to the Federal Reserve Board’s model‚ a 20 percent decline in stock prices lower the GDP by about 1.25% after one year.” For only one year‚ we can conclude that yes‚ the stock market in some ways does effect the economy. Many economists agree that stock market affects the economy‚ while there are still others that think there are many other influences that affect the economy and not
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Deforestation has been taking places in every part of the world. Many forests have been cleared out without considering the effect to the world. Deforestation was‚ is and is going to be done with the reason to fulfill human’s need. Forest was used to cover around 50% of the total land in the earth‚ but sadly forest only cover around 30% of the total land. Can we still call earth the green planet if deforestation keeps on happening? I strongly believe that we need to stop deforestation before it is
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Technology has always had an impact on policing. Understanding the technology used in the political era‚ professional era‚ and community oriented era ultimately explains how technology influences policing in the past and ultimately policing techniques used by police agencies today. Police technology in the Political Era was limited however‚ the technology that was available had a positive impact on the community. The printing press was one of the first major advances in technology which police
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