.... in many fields of life. Since the cave dweller times, dogs have been domesticated by humans and it has helped him to hunt, in herding, protection, etc. It has been very important as a work animal and as a psychological support for humans. The habitat of the dog is where it’s owner lives. Different dogs have different adaptations to their ancestral habitat but nowadays, this is not applicable. ANATOMY SKELETON The skeleton of the dog is the articulated structure, moved by the muscles, that holds the dog’s body and protects some organs and the nervous system. It also functions as mineral and blood deposit of the body. The skeleton .....

.... that can wrap around an entire solar system. There are about 150 known asteroids that travel in a path near the earth, and they are actually called, "near-earth" asteroids. About 10 percent are bound to hit earth eventually. Asteroids ranging from fine dust, to house size rocks make up the belt around Saturn, and the belt on the outside of the orbit of Mars. These are pieces of larger rocks that were crashed into the remaining pieces after millions of years of crashes. Each ring system has distinctive features. Jupiter's rings are tenuous and made mainly of dark particles the size of those in cigarette smoke. The bright rings of Satu .....

.... protecting mankind has recently suffered the effects of industrialized society. This " ozone shield is dissipating " and the cause is laid primarily to man - made chemicals ( Bowermaster et al, 1990, p.27 ). If enough of these man - made chemicals are released, " the ozone layer would be weakened to such an extent that it does not filter out the sun's invisible and dangerous ultraviolet rays " ( Jones, 1992, p.36 ). Such a scenario would drastically alter society and the environment. Ozone depletion has been described as " potential catastrophe " and " a planetary time - bomb " ( Way, 1988, p.9 ). The four main areas affected by a deplet .....

.... common CFCs may have a direct effect on climate 1000 times large than that of one kilogram of carbon. In addition over the last two decades the percentage increase of CFCs in the atmosphere has been higher than any other greenhouse gas. By 1990 the increase was 4-12% a year. CFCs also destroy ozone - itself a greenhouse gas - their net effect on climate is unclear. The strength of the indirect effect of ozone depletion depends on variables such as temperature of the upper atmosphere and cannot yet be measured with any confidence. According to new research, however, it is possible that the indirect effect of CFCs cancels out some o .....

.... even before the surgeon closes the incision, due to hyperacute rejection. This process clots the blood, by forming antibodies that attach to the endothelium of the blood vessels in the organ. The complement system creates gaps in vessels, allowing gaps to form and clots to accumulate. Therefore, a complement inhibitor was developed as the gene was cloned, introduced into pigs whose cells produced this protein. Another thing discovered, was that the cells lining the pig vessels have a sugar molecules called alpha-galactose, and humans have lots of antibodies against alpha-gal. Some are thinking of knocking out the gene for alpha-gal and .....

.... efforts to reactivate the shut-off genes have failed. English researchers have came the closest by teasing frog body cells to develop into tadpoles. The tadpoles, however, never matured into frogs. The Scottish researchers have failed many times with sheep cells before their success, but the task was perfected and accomplished. Now this accomplishment has made it possible for the cloning of almost any mammal, including humans. To the average person, exactly how the technique works is unclear. Scientist predicted that by making cells dormant and bringing them close to death, something happens to break the chemical locks (barriers) that k .....

.... history of fungi is not very clear because scientists have never realy wnt in great deepth , because fungi are not needed commericaly. the ancestors of fungi lived in shallow bodies of water about 600-800 million years ago. Some of the things the fungi had to encounter from living out of water was, there was more sunlight that was normally blocked be the water, and the had to do something about the rapid shifts in tempature and seasonal shifts. Fungi are different from other plants in many ways. The general characteristics of fungi are extracellalar digestion, peculiar structures, growth patterns, their use of spores for .....

.... to be a particle and particles do not have any mass. Ideal gases obtain no volume unlike real gases which obtain small volumes. Also, since ideal gas particles excerpt no attractive forces, their collisions are elastic. Real gases excerpt small attractive forces. The pressure of an ideal gas is much greater than that of a real gas since its particles lack the attractive forces which hold the particles back when they collide. Therefore, they collide with less force. The differences between ideal gases and real gases can be viewed most clearly when the pressure is high, the temperature is low, the gas particles are large, and when the .....

.... article in the November 1995 issue of CONSUMER REPORTS published a list of herbs that might help and herbs that cause harm. Almost all of the herbs that are helpful and none of the herbs that cause harm are in our products. The products come in tablet or capsule form. These tablets are cold pressed herbs and roots that have not been subjected to the nutrition destroying effects of cooking. This preserves the product in the most natural state possible. These herbs and roots are mostly grown in China and the Amazon rain forest, thousands of miles from any pesticides, herbicides and chemical pollutants. "The products are .....

.... it deteriorates until it eventually disappears (Strickberger 22). The inheritance of acquired characteristics states that the changes that occur in animals through the principle of use and disuse are passed on to the animal's offspring (Strickberger 23). Lamarck's theory on was proven false because it incorrectly asserts that organisms can change their inheritable traits. This assertion was shown to be untrue when the theory of natural selection was conceived. The idea of natural selection was formed by both Charles Darwin and Alfred Russel Wallace in the mid-1800s. Unaware of each other's work, they developed the same theory indepen .....