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Search results 10511 - 10520 of 12257 matching essays
- 10511: Do UFOs Exist?
- ... been found to be woven together just like fabric. Numerous reports say that electronic equipment has failed while used in the crop circle, and magnets sometimes haywire. Witnesses say that they have heard a very high pitch squeeling coming from the direction of the crop circles. Sometimes crops even change patterns as they grow, for example one crop circle got a wavy look in the center which wasnt there originally. Crop ...
- 10512: The Future of NASA
- ... not be so far advanced that people will be able to beam around the Universe or travel through time. However, unless something goes terribly wrong with the world, it is expected to advance tremendously. New, high-tech designs for rockets will make them more environmentally safe. Rockets will also be recycled and reused. Systems retrieving parts of rockets that are today, left behind in space, will be created. Astronauts will be ...
- 10513: The Kangaroo
- ... islands. Fossils of this creature have been found on many occasions. Q3. Name its habitat. A3. Most of the kangaroo species lives in the open fields of the Outback. Tree Kangaroos live in the trees high above the others. Q4. Survival- What does it eat? Drink? What is it's prey? Is it a predator? Does it live by killing and consuming other animals? What animals prey on it? A4. The ...
- 10514: The Serious Problem of Acid Rain
- ... is too acidic, the acidity of the water itself can be toxic to the frogs. Acid rain can also cause toxic elements, such as lead, arsenic, and cadmium, to be released from rocks in streams. High levels of these elements can decimate entire populations. Scientist Gary Fellers of the US Geological Survey has documented "serious declines" of five frog and toad species in Yosemite National Park and reduced numbers of amphibians ...
- 10515: Life On Other Planets?
- ... wet(Mission To Mars, 1). It is also now theorized that if life on mars did, in fact, originate in thermal vents [as it is thought to have done on earth], there is a reasonably high probability that organisms could have been fossilized(2). A group of scientists led by David McKay of NASA, Americas space agency, claimed to have found evidence of fossil microbes in a meteorite from mars (Fools ...
- 10516: Electrochemistry
- ... methods are used in the large-to-medium-scale synthesis of organic "fine chemicals" because of the financial, safety and environmental advantages. Here's a page outlining some current research by one of my graduate school professors. I can think of at least three common uses of electrochemistry: pH meters and other measuring devices pH meters are electrochemical devices. They measure pH by comparing the electrical properties of a solution to ...
- 10517: The Importance of the Ozone Layer
- ... be no variance at all. Unfortunately, the Congress passed a bill reducing the production of CFC's based on a NASA document. This document only told half of the truth. It said that chlorine was high in an area. What it didn't say was that a couple of days before and after, the levels returned to normal. Now there is a ban on CFC's that will affect many across ...
- 10518: Effects of Dam Building
- ... sun the waterweeds grew and threaten to create diseases such as malaria, where the whole lake's ecosystem would die out.8 Many little animals and plants which were never discoved and may have had high economic value were to be lost forever. There remains a problem with reservoirs which to date hasn't been solved yet. A reservoir is a to store water, mainly for hydroelectric power or irrigation. Nearly ...
- 10519: Hurricanes
- ... area of calm and scattered cloud cover is unique to the hurricane. Separating period of torrential rains, the eye, has a blue sky and sunlight against a background of circling clouds that are 12 kilometers high. The air within the eye slowly descends and heats by compression, making it the warmest part of the storm. A hurricane can be described as a heat engine that is fueled by the energy formed ...
- 10520: Destruction of the Ozone Layer
- ... that is present in the Earth's atmosphere in small amounts." The presence of ozone makes it possible for life on Earth. Ozone is made naturally by photochemical and discharge reactions. Photochemical production occurs when, " high energy radiation from the sun strikes ordinary oxygen molecules in the upper atmosphere." Lightening and sparks from motors also convert oxygen to ozone ( Stoker 1). The question about the destruction of the ozone layer revolves ...
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