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Search results 10571 - 10580 of 12257 matching essays
- 10571: Into the Depths of A Black Hole
- ... occurs. When the star is passed on into the Event Horizon the light that the star endures is bent within the current and therefore cannot be seen in space. At this exact point in time, high amounts of radiation are given off, that with the proper equipment can be detected and seen as an image of a black hole. Through this technique astronomers now believe that they have found a black ...
- 10572: Genetic Engineering: Correcting the Code
- ... insertions remain risky, but if the glitches can be ironed out the technique could be used to eradicate genetic diseases (Fackleman 356). Gene therapy also aides in infertility in men. At the University of Pennsylvania School of Veterinary Medicine, researchers have transferred germ cells from virile mice to testes of infertile mice. The cells matured to form sperm and in some cases the recipients fathered offspring. In a second test, sperm ...
- 10573: Rabbits
- ... be seen guarding a stack of freshly cut hay with determination. A pika bites off tender shoots of grass and plants and piles them up into stacks 2 to 3 feet (60 to 90 cm) high. The hot summer sun dries the grass and plants and preserves them for winter consumption. Measuring only 6 6o 10 inches (15 to 25 cm) in length and weighing 6 to 14 ounces (170 to ...
- 10574: Extinct Animals Research: Woolly Mammoth
- ... would suffice since the thick fur protects the animal in any extreme temperatures. Large enclosures would not be needed as they would be for a normal elephant since the Woolly Mammoth is only three meters high. The huge tusks would allow it to scavenge for its own food, so no special feedings would be necessary. Feedings would also be needed on a less frequent basis since the Woolly Mammoth, much like ...
- 10575: The Keys To Unlocking Transitions in Water
- ... present-day estuaries are young and ephemeral coastal features. Today's estuaries began to take their current form during the last interglacial period, when sea level rose about 120 m (Braun 36). However, the relatively high sea levels and extensive estuaries found today have been characteristic of only about 10 to 20 percent of the last million years. When sea level was lower, during glaciation periods, estuaries were much smaller than ...
- 10576: Darwinism: The Theory That Shook The World
- ... insects (Campbell p 424). His father, although noting his son's interest in nature, felt that all the discoveries of the natural branch of science had been accomplished so he sent his son to medical school at Edinburgh instead (Bowler p 62). While Darwin was there, he could not keep his mind on his medical studies and decided to go and study at the University of Cambridge and become a clergyman ...
- 10577: Introduction To Evolution
- ... by some external stimulus, such as irradiation or certain chemicals. The rate of mutation in humans is extremely low; nevertheless, the number of genes in every sex cell, is so large that the probability is high for at least one gene to carry a mutation. Gene Flow New genes can be introduced into a population through new breeding organisms or gametes from another population, as in plant pollen. Gene flow can ...
- 10578: The Koala
- ... since 50% since the turn of the century, the Australian government passed a law banning anything harmful to the koalas. At first, in the 1920's they were killed for their fur. Then, somehow, a high percentage of them became infected with a very contagious disease, chlamydia psittaci. Chlamydia psittaci causes blindness, pneumonia, and for females, sterilization. It has slowed down a lot since it was first introduced to the koala ...
- 10579: The Downy Woodpecker
- ... tap, tap, tap is the only sound to be heard above the wind in the trees. The downy is well equiped to survive the coldest weather. It even takes playful baths in the snow piled high on branches. A woman in Canada described one such incident: "This morning a female downy flew to a horizantal branch and proceeded vigorously to bathe in the loose snow lying there. Like a robin in ...
- 10580: The Dog
- ... smelling units
the human only has 500,000. The nose and the receptors function as the ones of other mammals such as humans. The ear is also quite developed in dogs. Dogs can hear very high pitched sounds such as ultrasonic. The auditive range of dogs is between 20Hz and 60,000Hz. The humans is from 16Hz to 20,000Hz. The functioning of the ear is the same as in ...
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