... Amalgams are alloys of mercury usually used to extract elements from there various ores. Then, once the common metal is extracted mercury is then separated through distillation. Without mercury our world would be much different. We would have different, if any, ways of determining temperature. Mercury is also used in cleaning modern day swimming pools as "Mercury Vapor lamps" for sterilization. Mercury can be used in both reconstructing and destroying life in water ways depending upon the attention people give it. We would have no fast, economical ways of cleaning large pools; no fast, economical way of controlling river clean-ups. Life in our modern day hous ...
... escaped Atlantic Salmon from aquaculture cages and their offspring are now competing with the native salmon. How depleted are native salmon and Steelhead populations, what has been done so far to boost the populations and has it been effective, and what can be done with dammed river to allow natural breeding? "Salmon Migration: Decisions, Decisions" no author Environmental News Thursday, "Columbia River Salmon Protection OK'd" no author Environmental News Tuesday, June 30, 1999 "Dam Busting Not Always the Best Decision" no author Thursday, December 31, 1998 "Columbia River Dams and the Decline of Northwest Salmon" A project developed by April Brende ...
... mixed with alarge proportion of , makes a satisfactory . In Europe, mixed with other compounds has long been added to motor fuels. was isolated in 1825 by Michael Faraday, but its structure remained amystery for 40 years. The problem was perplexing because the C(6)H(6) formula indicateda high degree of unsaturation, but does not display the reactivity characteristic of such compounds. In 1865, German chemist Friedrich August Kekule von Stradonitz proposed thatbenzene is structurally a planar hexagon in which the six carbon atoms are joined byalternating single and double bonds. Because this simplistic structure could not accountfor all of the unique prope ...
... Vega written next to it. If your sense of direction is legendary you will have no problem finding this legendary star. Al-Waki or "The Falling" is the Arabic name for Vega, to the Greeks Lyra belonged to Orpheus who animated and inanimate objects and even the Lord of Death with his music. But most interesting of all in India it is also called Abhijit in Rg Veda and is associated with the creator. Yes, to the Hindu religion Abhijit is an infinitely important character recorded as the "the Truth of 12,000 years B.C." in the Mahabharat. Mahrshi Vyras recorded, in a section called Vana Parva, a dialog between Indra and Skandra. An excerpt from this is included as wretch ...
... the Bay of Fundy tides and the currents of the St John River which flow out of the main Habour into the Bay. This section also experiences two high and two low tides each day (semi - diurnal), with a tidal range varying from 15 to 18 feet, depending on the type of tides. High - water heights vary from 22 to 28 feet and low - water heights vary from 0 to 7 feet above chart data. Because of these semi - diurnal tides and the action of the St John River, slack water in the Habour occurs at approximately tides and not at high or low water as would be the case at other parts. THE RHYTHMIC RISE AND FALL In the Bay of Fundy, the tides are spectacularly large. While th ...
... of this code refers to consent. All of these will be explained in greater detail below. Another gray area in psychology lies in the deception of subjects. There are some basic rules guiding how deceptions can be carried out. There is a large section of the code that was made with regards to animal research. The last major section of the ASA ethical guidelines has to do with giving credit where credit is due, and information sources. All of these regulations make research safer for the subjects and increase the effectively of psychological research. In psychological research, protecting subjects dignity is very important. Without willing subjects the re ...
... primitive forms. Plant organs are organized into three kinds of organs: roots, stems, and leaves. Roots anchor the plant into the ground and they also gather minerals and water from the ground. Roots usually grow under ground and downward. Roots have tiny “hairs” which increase the surface of the roots, which results in more gathering of minerals and water. Stems are usually above ground, grow upward, and usually have leaves. Plants that do not have leaves generally use the stem as the photosynthetic surface, like cacti. Leaves are still the most common photosynthetic surface on plants, though. Leaves absorb carbon dioxide and release oxygen. So ...
... and maybe even lakes or oceans. Life on Mars is now a real idea. The climate of Mars about 3.8 billion years ago was much similar to the young Earth. Microbes and bacteria probably sprouted everywhere in the warm and wet climate. Although now we only see a cold red planet, which was probably due to a collision of an astroid that would have set back the evolution process of Mars, causing it to be a harsh planet. A Viking spacecraft which landed on Mars in 1976 found that the planet was bathed in ultraviolet radiation, "intense enough so it would probably fry any microbe we know on this planet,"says Jack Farmer, an Ames researcher who calls himself an "exopal ...
... Carbon black is used in rubber products and paint. Charcoal is used as a cooking fuel and ivory black, made by heating ivory, is used as a pigment in paint. Most carbon occurs in combination with other elements. For example, the carbon dioxide in the air is a compound of carbon and oxygen. Other compounds containing carbon include minerals such as limestone, and fuels such as coal and petroleum. Carbon compounds make up the living tissues of all animals and plants. There are over one million known carbon compounds (still growing rapidly every year), which is over the sum total of all the other elements combined. The largest group of these compounds ...
... Africa, the one child policy in China and the mis-management of our oceans. The Sahel is a strip of land that extends for more than 6000 kilometres across the southern edge of the Sahara desert. It stretches from Senegal and Mauritania in the west to Ethiopia and Somalia in the east. These nations are among the world's poorest. The area is one of social and biophysical crisis because of the way the population are forced to live; they are destroying the productivity of the land. The alarming rate of population growth and ever increasing pressure on the land have initiated an expansion of desert-like conditions into the Sahel - a process called desertifica ...
