... stripes accented with white. that live in cold climates (Siberian ) have thicker fur than that live in warm climates. A tiger's tail is 3 to 4 feet long, about half as long as its body. use their tails for balance when they run through fast turns. They also use their tails to communicate with other . Where did tigers come from? Tigers (and all other carnivores) are descended from civet-like animals called miacids that lived during the age of the dinosaurs about 60 million years ago. These small mammals, with long bodies and short flexible limbs, evolved over millions of years into several hundred different species, including cats, bears, dogs and weasels. A ...
... should not be allowed to cut down the old- growth of the forest. The old growth of a forest includes the largest and oldest trees, living or dead. In the case of the North Coast forests, this includes some thousand-year-old stands with heights above three-hundred feet and diameters of more than ten feet. In 1990, the number of spotted owls dropped to 2000 breeding pairs. The preservation of any species contributes to the biodiversity of an area. In an ecosystem, the absence of one species creates unfavorable conditions for the others. The absence of the spotted owl could have a significant effect on the North Coast forest ecosystem. In order to send the ow ...
... by oil and gas combustion. is caused by a number of different types of pollutants. The first type, particulate matter, consists of solid and liquid aerosols suspended in the atmosphere. These arise from the burning of coal and from industrial processes. Atmospheric particles can scatter and absorb sunlight which reduces visibility. Particles also reduce visibility by attenuating the light from objects and illuminating the air causing the contrast between the objects and their backgrounds to reduce. Not only does it effect visibility, but it hastens the erosion of building materials and the corrosion of metals, interferes with the human respiratory system, and b ...
... shallow tunnles under flat stones or logs. Burrows found in east Texas were about 2.5 cm round, from 25 cm to 1.5 m long, and not more than 20 cm below the surface. Each burrow has a large area at the end for the nest which was composed of shredded grass. These nests were used for young or as a resting place for groups of adult shrews. Compared to most types of shrews, the least shrew is sociable, and several may be kept together in captivity without conflict. They sleep together and help eachother to some degree in digging tunnels and finding food. One nest found in December in Texas contained a dozen shrews that seemed to be staying there for the winter; another ...
... and in some other countries. Pro-life groups that oppose free access to abortion have considerable political power, and were able to have all human embryo research banned by the Reagan and Bush administrations in most of the 1980’s and the 1990’s (religoustolerance). Although the ban was lifted during the first days of Bill Clinton’s presidency, in 1997 he sent a bill to congress marked “immediate consideration and prompt enactment” stating that it would be illegal to create a human clone whether in private or public laboratories. Along with the US ban, nineteen European countries including Denmark, Estonia, Finland, France, Greece, ...
... to Greek writers, they were conversant with their transmutation, employing quicksilver in the process of separating gold and silver from the native matrix. The resulting oxide was supposed to possess marvelous powers, and it was thought that there resided within in the individualities of the various metals, that in it their various substances were incorporated. This black powder was mystically identified with the underworld form of the god Osiris, and consequently was credited with magical properties. Thus there grew up in Egypt the belief that magical powers existed in fluxes and alloys. Probably such a belief existed throughout Europe in connection with ...
... thrust bear no anatomical connection to the lost hind limbs, but are a seperate and distint development. They contain no bone, and owe their firm and yet flexible shape to underlying fibrous elastic tissue. The body is enveloped in a thick layer of blubber that aids in bouyancy, helps to preserve body heat, and is a source of stored energy. A cetacean’s skin is free of sweat glands, oil glands, or hair, and feels much like smooth, wet rubber to the touch. Cetaceans, like other mammals, have lungs. They breathe air through a single nostril, or pair of nostrils, located on the top of the head; but contrary to a popular image, they do not “spout” water whe ...
... 1991 natural mating has resulted in eight births at the Wolong centre. In addition to experience gained over the years at Wolong, the recent success of births can be attributed to improved cooperation between China's Ministry of Forestry and the country's zoos involved in panda breeding, as well as to an exchange of information and technology between Chinese and western scientists. Some problems are, however, still experienced with animal husbandry, particularly the care and welfare of infants. Disease and rejection by the mother have been the main cause of death among cubs. Investigation of these, and other aspects of panda reproduction, now form an active part ...
... site in Colorado, a bison graveyard was discovered of 190 bison. The pattern or relationship between the bones and how they were found gives the archaeologist clues as to how the bison were butchered. Some bones were found with spear points in the bodies, some whole skeletons were found closer to the bottom, and some bones were scattered all over. It can be inferred from the patterning of the bison bones that they were butchered differently. Middle range theory also plays a part in the Olsen-Chubbuck site. From the visible remains of the bison, we can estimate from the skeletal remains of the bison that the total meat was 60,000 pounds and the total amount of ...
... combine with the water in the atmosphere to form what is known as . The negative effects has on the environment is the main reason legislation of industrial emissions from governments has been prompted. is harmful to the environment because of its low pH. It can harm the biotic components of earth, and also the abiotic components. It's high acidity degrades soil to the point where it cannot support any type of plant life. Trees in forests are killed over long-term exposure. When these trees are killed, an imbalance in the hydrologic cycle can occur. Without living trees to consume the precipitate, it must be consumed by the earth or any other plants. These will ...
