.... axes. Crystal axes are imaginary lines passing through the center of the crystals. Minerals in each system share certain proportions and crystal form and many important optical properties. The six crystal systems are very important to a mineralogists and geologists; specification of the system is necessary in the description of each crystal system. Isometric This system comprises crystals with three axes, all perpendicular to one another and all have equal length. Tetragonal This system comprises crystals with three axes, all perpendicular to one another; but only two are equal in length. Orthorhombic This system comprises crystals with three mutually perpendicu ....

.... reefs, but hard corals and various algae are the major architects. In effect, the corals build limestone, because their skeletons are made of Calcium Carbonate. The skeletons deposited by these corals and other organisms accumulate, along with sand and other debris, to form the backbone of the reef. Over tens of thousands of years, chemical and mechanical changes turn the reef into true rock. The body of a coral animal consists of a polyp, which is the living portion of the coral. A polyp is a hollow, cylindrical structure attached at one end to a surface, the other end is a mouth surrounded by tentacles which gather food and can sting prey to paralyse it. Polyps live in ....

.... 1103ºC Crystal structure close-packed hexagonal Heat of combustion 25020 kJ.kg -1 Flame temperature ~2800ºC Heat of fusion 368 kJ.kg-1 Heat of vaporisation 5272 kJ.kg-1 Specific heat 1025 J.K -1.kg at 20ºC Vapour pressure 20 Pa at 527ºC(s) 360 Pa at 650ºC (1) 1400 Pa at 727ºC Valence states Mg2+ Viscosity 1.25 cp at 650ºC (1) The magnesium element has the atomic number of 12 and atomic weight of 24.3050. It's symbol is Mg. The group number that mg is in is group 2a. It's electronic configuration of [Ne].3 s2. ....

.... may get sick or even die. Most marine creature fall into two categories invertebrates (animals without backbones) and vertebrates (animals with backbones.) These animals are further broken down into phylums and classes. ECHINODERMS Echinoderms are marine invertebrate animals of the phylum Echinodrmata, having external skeletons of calcareous plates just under the skin, no head, and a water vascular-system with tube feet. Echinoderms are radially symmetrical, lack specialized ecretory organs, and reproduce sexually. Echinoderms have the ability to regenerate lost or injured body parts. Starfish: Starfishes are free-living echinoderms that have a flat, star-shaped ....

.... space showed their basic differences. The United States had separate civilian and military agencies, and only the military space programs were secret. Civilian space activities, especially , were openly publicized for the world to see. On the other hand, in the Soviet Union all space programs blended into a secretive military-industrial bureaucracy. Launches were not announced in advance, and only the successes were publicized. (Baker 158-161). During the early years of the Space Race, success was marked by headline-making, historical "firsts." Some of these firsts included the first satellite, the first robotic spacecraft to the Moon, the first man in space, the firs ....

.... We might not be able to relate to livestock but we CAN relate to humans. As President Clinton stated-"Attempting to clone a human being is unacceptably dangerous and morally unacceptable to our society..legislation must reaffirm our most cherished beliefs about the miracle of human life and the god-given individuality each person pocesses". Every person has his or her own mind. It would be cruel to make human clones without real parents, without being unique. If you were to make a copy of a human, you would not be treating that child as an individual. While many people want to be cloned, nobody wants to be a clone. We must also remember that immoral means never jus ....

.... by dramatic changes in the patters or intensity of colors of the fish. Males and females tend to advertise their sex and availability through vibrant colors. This sexual dimorphism is most evident in such reef residents as groupers. The color patters change predictably from the "juvenile: to the "initial" subdued pattern of small adults to the "terminal" pattern in the largest adult males. The terminal male is the one with the brightest colors and gaudiest patterns. The moon seems to play an important role in fish reproduction. According to Peter H. Pressley, it appears that the moon/s light may be as important as its gravitational pull. "Some fishes may use periods of ....

.... end of my speech you will be aware of how this argument came about, and the economic impact of what will happen. I will end my speech by reinforcing one of the purposed solutions. As I have stated before in 1992 there was a changing event when four species of salmon were placed on the Endangered Species List. According to a Protecting the Environment ’99 article “A look at the impacts of removing dams” by Chris Fowler, it states, “The listing triggered a series of events which have led the Army Corps of Engineers to consider the removal of four dams on the Lower Snake River.” There is no disputing the fact that the number of native salmon swimming in the rivers and ....