The Changing Climate 1. “Earth’s climate has always been changing; it is the rate of change that is of current concern to scientists.” With reference to Figure 1, and other evidence which you have come across, discuss the validity of this statement. Firstly, global climate change is defined as “a change in the long-term weather patterns that characterize the regions of the world.” From Figure 1, we can see that the Earth’s climate has always been changing (at least temperature-wise),
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Salinity Species like fish and prawns migrate and thus avoid stressful salinities when conditions are unfavourable The less mobile organisms such as Cyclograpsus punctatus can’t tolerate salinities below 20% migrating into certain suitable sections of the estuary. Sesarma catenata moves further into the estuaries as it tolerates 7% but S. eulimene occur near the head of the estuaries where salinities reaches 2. 7% Floods influences the salinity levels and result in very low salinity which
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sources such as comets and meteorites. Discuss the origin of the salinity of seawater and how the ocean maintains salinity. Chemical weathering of rock and volcanic eruptions are some of the sources that are involved in the salinity of seawater. Evaporation of surface water and freezing of seawater makes seawater saltier. While rain, snow, and river water make it less salty. 2 Part 2 Surface currents obtain their energy from the wind blowing over the surface waters. The currents do not exactly
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The Avoidance of Pressure Injury on Marjorie Templeton Using Evidence Based Practice Procedures, protocols and guidelines evolve as new research shows for more efficient practice. Nurses must stay competently with these changes as evidence-based practice offers patients the best quality care, avoidance of adverse effects and variances (White, Dudley-Brown & Terhaar, 2016). Performing care that is poor evidence based can put the patient at risk of their safety and quality of care (Clarke & Donaldson
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FOOD from the SUN HOW PLANTS LIVE AND GROW LIFESCIENCE © 2008 Rourke Publishing LLC All rights reserved. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical including photocopying, recording, or by any information storage and retrieval system without permission in writing from the publisher. www.rourkepublishing.com PHOTO CREDITS: p. 17: Sally Bensusen/Science Photo Library; p. 26: Jonathan S. Blair/ Getty Images; p. 33: Vera Bogaerts/istockphoto
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The Determination of Percentage Ethanol from Gin Vodka by Simple Distillation *Bejasa,B. ; Beltran,R. ; Bombase,M. ; Bunyi,C. ; Canlas,L. 2BMT Abstract Vodka is composed primarily of water and ethanol with traces of impurities and flavourings and naturally has an alcoholic content of 38-40% by volume. This experiment aimed to determine the percent ethanol of the vodka through simple distillation. A 30mL of the sample was collected and heated through the use of alcohol lamp. A collection of
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Most chemical reagents were purchased from Sigma-Aldrich Chemical Co. (St. Louis, MO, USA) and used as received without further purification. All the reactions were carried out under a dry nitrogen atmosphere, unless stated otherwise. Solvents were dried using the standard method. 4,4'-Dicarboxy-2,2'-bipyridine (dcbpy), 4,7-dicarboxy-1,10-phenanthroline (dcphen), 4,4'-bis(E-carboxyvinyl)-2,2'-bipyridine (dcvbpy), 4,7-bis(E-carboxyvinyl)-1,10-phenanthroline (dcvphen), and 5-(2-[2,2'-bipyridin] -5-ylethynyl)-22'-bipyridine
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precipitation of proteins, polyphenols and some lipids; production of hop-derived flavours and aromas; sterilisation of the wort; further precipitation of calcium phosphate [Ca3(PO4)2] and its effect on pH; the distillation of volatile materials; water evaporation and subsequent wort concentration; enhancement of colour (caramelization, melanoidin formation, oxidation of tannins); reduction of
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“The earth has a fever and the fever is rising … We are what is wrong, and we must make it right.” In the context of global warming, discuss the extent to which you agree with this statement. (40 Marks) Global warming refers to the way that heat is being trapped in the atmosphere due to the greenhouse effect. The greenhouse effect is when heat is trapped in our atmosphere by gases such as Carbon Dioxide. The greenhouse effect is actually a good thing because without it, the Earth’s global temperature
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Global Warming “Global warming, along with the cutting and burning of forests and other critical habitats, is causing the loss of living species at a level comparable to the extinction event that wiped out the dinosaurs 65 million years ago. That event was believed to have been caused by a giant asteroid. This time it is not an asteroid colliding with the Earth and wreaking havoc: it is us.” Former Vice President, Al Gore, has continued his ongoing work as an environmental activist even after
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