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…interact transfers the entire mass of both objects into energy. Scientists believe that this energy is more powerful than any that can be generated by other propulsion methods. So, why haven't we built a matter-antimatter reaction engine? The problem…

…For many centuries wind has been used as a reliable source of energy. It is clean and inexhaustible. Wind is used to make the job of a human simpliar. It is used for grinding grain, pumping water, and to enable sail boats to move. Though often…

…anti-matter. Some thought it had a negative mass, and would thus feel gravity as a push rather than a pull. If this were so, the antiproton's negative mass/energy would cancel the proton's when they met and nothing would remain; in reality, two extremely…

…are using for exercising. To get more active and be fit the muscles in the body will need to produce energy. The muscles will need oxygen to produce some of this energy. If there is too little oxygen the muscles will produce little energy. This can lead up…

…needs. This may mean using unleaded petrol or consuming less energy. An international assessment concluded that a warming of 1.5 to 4.5 degrees Celsius (due to global warming) would cause a rise in global sea levels of 40 to 120 centimeters, leading…

…and oil prices, it is scary to think about how much alternatives to oil would negatively affect the world economy. There is no right answer in this debate. Bibliography A Primer on Gasoline Prices. July 2001. National Energy Information Administration…

…The Greenhouse Effect refers to the phenomenon in the atmosphere, whereby the presence of greenhouse gases disturbs the energy balance of the atmosphere. Because of greenhouse gases, the atmosphere re-radiates less infrared energy than it absorbs…

…Enzymes, which are usually proteins, are biological catalysts--agents that change the rate of a reaction but are unchanged by the reaction. The molecules, which an enzyme reacts with, are called substrate. Enzymes reduce the activation energy needed…

…of the atoms in a given mass to decay. Some isotopes decay very rapidly and, therefore, have a high specific activity. Others decay at a much slower rate. Radioactive decay is the spontaneous breakdown of an atomic nucleus resulting in the release of energy…

…THE CYCLING OF CHEMICAL ELEMENTS IN THE ECOSYSTEM <Tab/>In the water cycle, energy is supplied by the sun, which drives evaporation either from ocean surfaces or from treetops. Wind moves the clouds to different places, otherwise it would…