Introduce your proof, quote it, and explain it. Body paragraphs in academic essays contain evidence that supports controversial key concepts that occur in subject sentences, and prudent writers ensure that quotes and paraphrases used as proof are introduced, cited, and explained. The Evidence-Based Medicine approach involves searching for high-quality research studies (evidence) on the effectiveness of different treatments for patients, then using this information to make treatment decisions.
The best evidence comes from well-conducted clinical trials that measure the effects of treatments under standardized conditions. These experimental studies should be available when making healthcare decisions. When such studies are not available, experts can make an estimate of how effective a treatment might be based on other types of evidence, such as expert opinion or studies of its historical use in patients. This process, called evidence-based medicine (EBM), means using the best available evidence to make diagnosis and treatment choices. EBM has become the standard of care in modern health care systems because they know it leads to better outcomes for their patients.
Evidence-based practice (EBP) is the application of EBM to everyday clinical situations. It requires that practitioners identify the best evidence available on any topic relevant to their practices, evaluate the quality of this evidence, and then apply it to make decisions about their patients' care.
A group of British and American scientists claims to have discovered conclusive proof that humans are to blame for considerable Antarctic ice loss. They claim that their study is the first to show a direct correlation between human-caused global warming and the melting of the West Antarctic Ice Sheet (WAIS).
Scientists have long known that increased temperatures can cause ice shelves and glaciers to melt, but this new study shows for the first time that it is possible to calculate how much more likely an area of ice sheet is to collapse due to warming temperatures. The team used computer models of WAIS behavior to show that if current trends continue, the region will be completely melted in about 300 years.
The study was published in Nature on Wednesday, February 9th, 2013. It was led by David Vaughan of the University of Cambridge's Scott Polar Research Institute and includes researchers from the University of Cambridge, the University of California, Irvine, Harvard University, the Massachusetts Institute of Technology, NASA's Jet Propulsion Laboratory and the French National Center for Scientific Research.
In order for humans to melt ice from the Earth's surface, we need only heat it up enough to cause water molecules to break away from the ice and enter the atmosphere. As these atmospheric waters vaporize, they leave behind a vacancy in the structure of the ice that can't be replaced because ice is composed of frozen water molecules.
Students will learn about sea ice and land ice in this project. They will witness ice melting on a solid surface near a body of water as well as ice melting in the body of water. Students will anticipate what each event will do to the amount of water prior to the exercise and then compare their predictions to what they observe. They will also research other factors that affect both types of ice, such as air temperature and precipitation.
Sea ice is frozen ocean water that forms in winter and covers large areas of the Arctic Ocean. Sea ice is important for several reasons. First, it provides a protective cover for marine animals from wind, waves, and predators. Second, it acts as a sponge for heat around the Arctic Ocean, which prevents more heat from being absorbed by the ocean waters. Finally, some scientists believe that changes in sea ice may be responsible for changing climate patterns across the Arctic.
Land ice is frozen soil or rock that covers large areas of the planet's land masses. Land ice plays an important role in regulating Earth's climate because it can absorb solar energy when it is frozen over and then release this energy when it begins to melt in spring or summer. The most common type of land ice is snow, which falls primarily in the Northern Hemisphere's latitudes (between 30 degrees north and 60 degrees south). Snow accumulates during cold months and melts in warmer months.
Ice sheets are large bodies of ice that cover large parts of Greenland and Antarctica.