Institution: Course: Name: Date: The author of the article " When Did Photosynthesis Emerge on Earth?” is David J. Des Marais. The author examines the period when photosynthesis emerged and the issues surrounding its emergence in our biosphere. The author looks at the historical and evolutionary evidence to advance the topic of the emergence of photosynthesis. The article is majorly based on the biosphere changes and the changes in the oxygen levels and the metamorphosis
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the lamp and the Cabomba in the glass chamber attached to capillary tube, on the dependent variable, the distance (mm) travelled in 120 seconds by the sodium hydrogen carbonate in the capillary tube to suggest the effect of light intensity on photosynthesis. Prediction I predict that the shorter the distance (cm) between the lamp and the Cabomba in the glass chamber attached to the capillary tube the further the distance (mm) moved by the sodium hydrogen carbonate in 120 seconds. I predict a
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BIOLOGY OF PROTIST ABUDANCE AIM: Study the abudance of protist in a cowdung culture INTRODUCTION: Protists belong to the Kingdom Protista, which include mostly unicellular organisms that do not fit into the other kingdoms. Though mostly are unicellular there are some multicellular organisms within the kingdom. Thus species form of the “body” of the organism consists of a variety of types of cells, each type with its own specialized function unlike the unicellular form. We also find colonial protist
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Abstract: In this experiment we observed and later identified the effects of certain herbicide application on plant growth. We planted a total of fourteen seeds in each of our eight different pots; seven soybean seeds and seven corn seeds. We designated four different treatment groups that were labeled the following; control, unknown, known, and extra treatment group. Over the course of two weeks the plants were placed in a greenhouse and given the proper measures to germinate. Then, the greenhouse
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another, from less than 20% to more than 90%. After the water is removed, the bulk of the dry plant material consists of carbohydrate compounds containing the elements carbon, hydrogen, and oxygen. Using the energy of sunlight in a process called photosynthesis, plants make carbohydrates in their leaves. The carbon and oxygen in carbohydrates come from carbon dioxide, which the plant absorbs from the air, and the hydrogen comes from water absorbed both through the roots and through the leaves. About
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Light Intensity Analysis draft for BY6 assessment- Analysis (A)- (a) Description of trend shown by results: It is clear from my graph that there is a negative correlation. As the distance between the lamp and cabomba sp increased, the mean distance moved by the NAHCO3 solution in the manometer over 3 minutes decreased. The mean distance moved by NAHCO3 solution in the manometer over 3 minutes falls rapidly by 100 mm between the distances 4 and 12 cm. Yet, the mean distance moved by the NAHCO3
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Based on the financial statements on BA’s website, there was a loss of £401 million in the mid-year of 2009 (Milmo, 2009) – it was then apparent to BA that in order to survive in the competitive environment, changes are necessary. Summary of threats that have affected BA’s survival are: 1. Increase in oil prices. 2. Increase in competitors – low-cost airlines with low fares. 3. Global recession which cause a drop in passenger counts (especially in strong market like US
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Essay Climate change is quite possible the most destructive threat that has ever faced mankind. It has the potential to drown whole nations and port cities with rising sea levels due to thermal expansion and the melting ice caps, entire weather systems will change, disrupting agriculture and causing wide spread poverty and famine. Scarier still is the estimated tipping point, the point of no return, our enhanced greenhouse effect will develop into a runaway greenhouse effect. The same effect which
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carbon cycle. How is carbon cycled back and forth between the atmosphere, and plants and animals? Why should people care about the carbon cycle? * The carbon cycle goes through a two-step process involving photosynthesis and respiration. Green plants undergo both photosynthesis and
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Food Web Case Study Explain theory in your own words based on the case study Food web is an essential ecological concept. A food web commonly used for Basically, food web represents feeding relationships within a community (Smith and Smith 2009). Food webs are essentially used as an ecological concept that models the predator-prey relationship. Based on the case study, each food web is a descriptive diagram including a series of lines connecting one species to another, representing the
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