... sedimentary rock; this is called Breccia – a mixture of all rock. An example of this is at Maori Bay. Coastal Erosion operates at different rates and different times. Limestone rock is eroded slower than sedimentary rock. The cliff at Muriwai made of sedimentary rock was eroded back to expose ‘Fisherman’s Rock’ - the shore platform which, made of limestone – tended to erode back slower than the cliff. The types of wave erosion that caused this are - Hydraulic Action, when waves hit the cliff, air is forced into cracks, and then as the wave retreats this air expands explosively. Over time the cracks enlarge, weakening the base of the ...
... paper are compounds of carbon with hydrogen and oxygen. Proteins such as hair, meat, and silk contain these and other elements such as nitrogen, phosphorus, and sulfur. More than six and a half million compounds of the element carbon, many times more then those of any other element, are known, and more are discovered and synthesized each week. Hundreds of carbon compounds are commercially important but the element itself in the forms of diamond, graphite, charcoal, and carbon black is also used in a variety of manufactured products. Besides the wide occurrence of carbon in compounds, two forms of the element--diamond and graphite, are deposited in wi ...
... found in wood, cotton, and paper, which have been chemically altered. Scientists first started to make them in the second half of the nineteenth century, long before we really even knew what a polymer was. The very first came about when a scientist reacted cellulose, in the form of cotton, with nitric acid. The result was cellulose nitrate. Cellulose nitrate, also called gun cotton, turned out to be a powerful explosive. It soon replaced common gunpowder as the explosive charge in the ammunition for rifles and artillery. Cellulose nitrate was also used to make an early polymer containing composite material, safety glass. This was a sandwich made of a sheet of cel ...
... the earth called "Global Warming." Starting in the mid-1700s, human activities began to alter the composition of the atmosphere. Vast supplies of charcoal, and later coal and oil, fed the growing fires of the Industrial Revolution. The carbon stored in these fuels was released to the air as carbon dioxide - a gas that traps heat in the atmosphere. Today, for every one of the more than 5.8 billion people on Earth, nearly six tons of carbon dioxide is spewed into the air every year. As a result of our activities, the gas trapped inside the atmosphere has risen by more than 30 percent in the last 250 years. These greenhouse gases which prevent infrared radiation f ...
... in Japan. Cold fusion is a real but still incompletely explained energy-producing phenomenon that occurs when ordinary hydrogen and the special form of hydrogen called deuterium are brought together with metals, such as palladium, titanium, and nickel. Usually, some triggering mechanism, such as electricity or even acoustic energy, is required to provoke the "cold fusion" effects. Both ordinary hydrogen and deuterium are abundant in ordinary water so the process would likely end many of the world's energy concerns, if it can be developed commercially. One of the biggest reasons that cold fusion is so difficult to replicate is that it is not easy to supe ...
... century (1:3). Later, in A.D. 129-200, the physician, Galen, used five pigs to investigate the effects of several nerves (1:4). He is considered to be the founder of experimental physiology. During the Renaissance Era, Andreas Vesalius conducted experiments on monkeys, swine, and goats (1:3). By the late eighteenth century, the methods of scientific discovery were changer to experimentation of live animals by two French physiologists, Claude Bernard and Francious Magnedie. They revolutionized methods of scientific discovery by establishing live animal as common practice (1:4). Claude Bernard believed that in order for medicine to progress, there must be experi ...
... Mountain formation - Volcanic activity - Destruction by man New Species A good example of allopatric speciation is the differences between the common giraffe (Giraffa camelopardalis), and the reticulated giraffe (Giraffa cameloparadalis reticula). These two subspecies have formed on different sides of the Tana River in Kenya. They are phenotypically distinct, and can only produce fertile offspring in zoos. Sympatric speciation occurs when two segments of the same species occupy a geographical area without interbreeding. Each new species, or subspecies, adapt to a specific environmental niche (adaptive radiation). Two segments of the same species A ...
... a clone twin will be [years] younger than the original person. (1) Whether or not scientists should or should not clone humans is a tough question to answer. Legally, are scientists able to make clones? The answer is no. Should scientists be able to make a headless human? (body parts) Yes, as long as no law exists banning headless humans. Before going into this controversy, some background about what has happened in cloning would be useful. Two astonishing feats have been achieved in the scientific world. One is the cloning of a sheep named Dolly, and the other is the development of headless frog embryos. Dolly was cloned in Edinburgh, Scotland, at the Roslin ...
... the middle ages, this abnormal behavior was considered to be a result of demonic possession. It was treated with exorcism, flogging and torture to drive the evil spirits from the body. It wasn't until the late 19th and early 20th centuries that physicians had a more scientific view on depression. Sigmund Freud and Josef Breuer discovered that depression is a psychological and not a demonic force or organic abnormality. Depression is caused by many factors. The loss of a loved one during childhood or other traumatic experiments (ie. abuse) can increase person's chances of developing depression later on in life. The number one cause of depression i ...
... can be caused by runoff, hurricane waves, tsunami (seismic sea waves), and hurricane rains. Coastal flooding can not only take part on oceans but it can also take part on lakes. Coastal flooding can be a great danger because coast lines are very densely populated areas. In the United States in the early 1990's 50% of the population was on a coastal county.1 Although they shrink before reaching shore, wind generated waves have been spotted to be as high as 30 m (100 ft) in the middle of the ocean.2 In 1970 a major storm in the Bay of Bengal produced heavy seas that flooded regions of East Pakistan, killing about 200,000 people.3 River flooding can happen ...
