.... The many theories concerning the origin of the solar system that have been advanced during the last three centuries can be classified as either dualistic or monistic. A common feature of dualistic theories is that another star once passed close to the Sun, and tidal perturbations between the two stars drew out filaments of gas from which the planets condensed. Theories of this type encounter enormous difficulties in trying to account for modern information about the solar system, and they have generally been discarded. By contrast, monistic theories en .....

.... source. When the acids fall on to the earth in any way or form it will have a large impact on the growth or the preservation of certain wildlife. Areas in Ontario mainly southern regions that are near the Great Lakes, such substances as limestone or other known antacids can neutralize acids entering the body of water thereby protecting it. However, large areas of Ontario that are near the Pre-Cambrian Shield, with quartzite or granite based geology and little top soil, there is not enough buffering capacity to neutralize even small amounts of acid falling on .....

.... the amount of oxygen found in it. The living things in the lake need oxygen to survive. If the oxygen level is depressed to zero, all fish in the lake die. Any decomposition that does not contain oxygen starts to generate noxious gases such as Hydrogen Sulfide. Pulp and paper mills, and municipal sewage causes BOD. Nutrients: Nutrients, particularly nitrogen and phosphorus, enrich waters and accelerate the aging of lakes and streams. Also, the result of this is rich plant life which prohibits recreational activities. Plankton blooms depress oxygen levels (as .....

.... climate. One of the most unique things about water is the fact that it expands when it freezes unlike many other liquids. Its thermal and transparent properties protect aquatic life in freezing temperatures. All of these things combined help to sustain life and keep it constantly evolving. In the next couple of pages, we are going to go into detail of how it does this. Water consists of two hydrogen atoms that are joined to one oxygen atom by covalent bonds. These bonds are polar bonds. The partial charges on different parts of water molecules produce weak att .....

.... it the atmosphere. When and oxygen atom from the ozone reacts with a chloride ion from chlorine monoxide, the ozone molecule is destroyed. So chlorine monoxide is an ozone destroyer. There is always a certain amount of chlorine monoxide in the atmosphere. It is important to remember that ozone is constantly being created and destroyed in the atmosphere. The amount of ozone in the atmosphere is based on these reactions. There are many factors that influence the amount of reactions like season, latitude, and solar cycle. Because of these factors ozone can v .....

.... security problems are created as we depend on computers more and more everyday. Computer Systems these days are protected in one of two ways, or both. The first is through passwords. Passwords work only to a certain extent. Many people lack the forethought to make their password something that is not easily guessable. Your name, birth date, or anything that could be guessed with a little bit of thought is a bad idea. The other way to protect a network is to use a firewall. This technology is often effective but can be bypassed, and is often picky about w .....

.... and voluntary movement which described the difference between normal waking state of animals and men and their condition when asleep.2 Other descriptions included an analysis of consciousness as a form of relationship or act of the mind toward objects in nature, and a view that consciousness was a continuous field or stream of essentially mental "sense data." The method believed by most early writers in determining consciousness was introspection—looking within one’s own mind to discover the laws of it’s operation. This belief was limited when it was app .....

.... The polymer poly-p-benzamide was found to form liquid crystalline solutions due to the repetitiveness of its molecular backbone. The key for the structural requirement for the backbone is para orientation on the benzene ring, which allowed for rod-like molecular structures. This technology was used when Du Pont released aramid fiber in 1971. What is it? Kevlar is an aramid, a term invented as an abbreviation for aromatic polyamide. The chemical composition of Kevlar is poly para-phenyleneterephthalamide, and it is more properly known as a para-aramid. .....