Остров Киска пребывал под японской оккупацией с лета 1942 года, когда японские морские пехотинцы высадились на остров и уничтожили метеостанцию америк...полностью>>
Таке тлумачення, з одного боку, має сенс, сутність якого полягає в тому, що ці два поняття відображають існування одного і того ж об'єкта — системи ві...полностью>>
Культура и искусство->Реферат
В течение всей истории человечества у всех людей всегда существовало понимание о правильном и неправильном поступке, о том что можно делать и что нель...полностью>>
- During World War II rubber supplies were cut off to the western world and we began to work on a compound that was a synthetic rubber. We succeeded in supplying the demand and now that same synthetic compound is used today.
- Since the beginning of industry humans have been in search of fuel to power machines and generate energy Fossil fuels, such as crude oil and coal, discovered beneath the Earth s surface were found to be an excellent source of fuel These fossil fuels are burnt in order to generate the energy required to complete various tasks However, we are now realizing the problems that are created by using fossil fuels to generate energy These problems are so great that they will force humans to find an alternative source of energy in order to avoid the inevitable disasters that lie ahead
- At the beginning of human history, we had to satisfy our energy needs (for food, heat and movement) by using our own muscle power and gathering or hunting naturally available plants, animals and wood. Each stage in the evolution of human society (the development of farming, domestication of animals, harnessing of wind and water power) increased the average per capita energy use, but it was the Industrial Revolution and the exploitation of fossil fuels which marked the transformation of societies into the energy-intensive economies of today.
- Energy is the foundation of industrialized world; without energy, life as we know it would cease to exist. The yearly energy and fuel consumption rates have risen dramatically within the last years. This phenomenon is a direct result of globalization pressures, the international information network we call the Internet, and a population that seems to be hitting the dangerous upswing of the Malthusian curve.
- Before computers there were hands and tools. Before hands and tools there were just hands. Humans have always been designing and throughout human history drafting is what became of it. With new technology in building during the earlier years drafting needed to be changed to accommodate it.
- Plutonium, Our Country’s Only Feasible Solution Abstract: Should we begin to manufacture one of the most destructive and infamous substances on the face on the Earth once again? The engineers say yes, but the public says no. The United States stopped making this element with the ban on manufacturing nuclear weapons.
- It is widely accepted that humans have been a major cause of environmental problems since we began creating our cities and especially since the Industrial Revolution of the 20th century. All aspects of the Earth have been affected by humans’ desire to conquer and dominate the planet.
- Hydrogen can do just about everything conventional fuels can do but better. Hydrogen can be “packaged” in several ways, as a fuel gas in a H3/0 powered engine or the newly devised solid state pellet of hydrogen isotopes that contains about the equivalent of 5 cubic feet of hydrogen and is broken down and releases gas into the second chamber where it goes to the engine for use.
- The environmental problem I consider to be the most important. All of the others pale in comparison, for if we no longer have a hospitable earth to live on, our cultures and equality are of little matter. The book devotes and entire chapter to covering this topic, but it can be pared down to one basic point: The current levels of consumption in the developed industrial nations of the world are non-sustainable.
- Evironmentalism: The Next Step Broad Social Change Through Personal Commitment Introduction In the last thirty years, America has witnessed an environmental revolution. New laws like the 1963 Clean Air Act and the 1974 Safe Drinking Water Act forged new ground in political environmentalism.
- Capturing sunlight is not as easy as it sounds. It is a dilute energy source, spread out over time and space. Earth receives 5.6 x 1018 (5,600, , , , , ) megajoules of solar radiation each year (Box 1), but to make it worthwhile we need to collect it over many hours and across many square metres of ground.
- Modern civilisation depends largely on energy. Without it our lives would be reduced to the level of a caveman?s. We would have nothing to power the equipment we rely on to get on with our daily lives. Life would in a way come to a standstill without energy.
- For several decades drugs have been one of the major problems of society. There have been escalating costs spent on the war against drugs and countless dollars spent on rehabilitation, but the problem still exists. Not only has the drug problem increased but drug related problems are on the rise.
- Any species cannot live everywhere because this would effect the natural balance Also one species cannot adapt to all the different environments of our planet For example a marine creature can only live underwater and cannot live on ground
- We’ve found ourselves sitting on the global fence between our magliomaniacal brother to the south and our staunch traditionalist motherland to the east. From this division of powers and alliances we find ourselves locked into a self-induced ignorance and stifling conservatism.
- Throughout American history our country has come to rely on many different natural resources. With technology and the population increasing, the number of fossil fuel reserves and natural forests are going down. What America needs is a renewable source of fuels and fibers that will meet the growing needs of the future, but will not damage our environment.
- Climate change is not a new concept; in fact there is evidence of major climate changes throughout the earth’s history. However since the industrial revolution and especially since world war two, there has been an unprecedented change in the earth’s atmosphere (Gates 4).
- Global warming is the most urgent environmental problem the world will face in the next decade and the next century. Few, if any, trends are more important to our future than climate change caused by human activities. Scientist around the world are warning us that global warming poses a major threat to our future quality of life, previously there has been little information on this problem.
- In recent years, a great amount of attention has been focused on environmental issues. Nightly we are informed of yet another creature in danger of extinction. Still, despite this increased awareness, the problem remains. One facet of this overwhelming dilemma is the problem of acid rain.
- Some scientists believe the greenhouse effect is directly related to the earth’s warming, others believe it’s a cycle of earth’s temperatures. Global warming is an increase in the earth s temperature due to the use of fossil fuels and other industrial processes, leading to a build-up of greenhouse gasses.