... is that fire, if not handled properly, could result in a brush fire or even burn down their shelter. An advantage was it was efficient when conditions were correct. It provided an inexpensive form of lighting, and could be used for cooking and heating. Due to the persistent problem of limited fuel, inhabitants looked for a way to prolong the fuel. (Thwig 29-34) The next step in lighting that followed was a candle. Candles offered one main advantage over the fire by itself, fuel. A candle was able to provide a long burning light and was relatively inexpensive to produce. Candles were originally made from whale fat. The flame would burn and would slowly use ...
... usher in a world where gene defects, bacterial disease, and even aging are a thing of the past. By understanding genetic engineering and its history, discovering its possibilities, and answering the moral and safety questions it brings forth, the blanket of fear covering this remarkable technical miracle can be lifted. The first step to understanding genetic engineering, and embracing its possibilities for society, is to obtain a rough knowledge base of its history and method. The basis for altering the evolutionary process is dependent on the understanding of how individuals pass on characteristics to their offspring. Genetics achieved its first foothold on the s ...
... the actual world system long wave cycle. Briefly described, there are four quadrants to the K-wave. In quadrant one we have that “risk is relevant to what the masses think”. In this stage of the K-wave going against mass thinking can result in a very wise choice. Most people can be extremely cautious and pessimistic during this period not knowing what to be cautious about. There is much speculation going on and being one of the first persons to act may give you and advantage. In the second quadrant nominal rates expand, there’s speculation of hard assets, etc. Gradually paying off debt here is recommendable. It is a time where there is most likely a s ...
... This is very hard on animals especially elephants who bathe frequently in their natural environment. But, the circus environment is very different from an animal’s natural habitats. Summer can be hard on animals such as bears, while lions, can suffer more in winter months. Veterinarians qualified to treat exotic animals, are not always present or available. As a result animals suffer and die due to the lack of proper medical attention. Physical confinement is very harmful physiologically and psychologically. The Born Free Foundation conducted a study that found that 22% of the time confined elephant’s present abnormal action, like repeated head bobbing ...
... of life and began to prove and bluntly say things that the bible and religion could not come near to explaining, it became the basis for fact. The ‘heroic model’ could easily be blamed for the breakdown of the religious-infested societies that plagued the world. This became very important to everyone involved, which proved to be more people than expected. The ‘heroic model’ was an opening for scientist and others to express their opinions without the fear of being ostracized and labeled as a blasphemer. These people were no longer look down upon as sinners, against God and religion, yet they were praised for bring truth and secularity to ...
... molecules. Many come from directly identifiable sources; sulfur dioxide, for example, comes from electric power plants burning coal or oil. Others are formed through the action of sunlight on previously emitted reactive materials. For example, ozone, a dangerous pollutant in smog, is produced by the interaction of hydrocarbons and nitrogen oxides under the influence of sunlight. Ozone has also caused serious crop damage. On the other hand, the discovery in the 1980s that air pollutants such as fluorocarbons are causing a loss of ozone from the earth's protective ozone layer has caused the phasing out of these materials. Current information about the problem ...
... of heavy elements in the stars. Nineteen isotopes of technetium, with atomic masses ranging from 90 to 108, are known. 97Tc has a half-life of 2.6 x 10^6 years. 98Tc has a half-life of 4.2 x 10^6 years. The isomeric isotope 95mTc, with a half-life of 61 days, is useful for tracer work, as it produces energetic gamma rays. Technetium metal has been produced in kilogram quantities. The metal was first prepared by passing hydrogen gas at 1100C over Tc2S7. It is now conveniently prepared by the reduction of ammonium pertechnetate with hydrogen. Techne tium is a silvery-gray metal that tarnishes slowly in moist air. Until 1960, techne tium was available only in ...
... attract each other. This later was named the law of electrical charges, and is essential to the understanding of electricity. A third idea was that if the distance between electric charges is increased, the force of attraction or repulsion decreases. All matter is made up of very tiny particles called atoms. Atoms are made up of even smaller substances called subatomic particles. Scientific studies have found that some of these subatomic particles are charged with electricity. The electric charges are made up of two kinds - positive and negative. The positively charged particles are called protons, and the particles with negative charges are called electron ...
... and it would have severely negative economic impact on the industries. So the core issue becomes the fact no matter what, there will always be pollution, as long as these industries exist. So we should focus on how we can minimize this and yet at the same time have an efficient market system? Furthermore, we should also focus on how we can accomplish this so that sustainable growth and development can take place. So there is definitely a need for some form of government intervention to enforce and monitor this. Reason being that there is always an element of equality that has to be enforced, when dealing with cases such as this. For instance, larger c ...
... In contrast, endotherms derive most or all of its body heat from its own metabolism (Campbells,p899). Because ectotherms do not produce their own heat, they cannot actively ensure their ideal temperature for an ideal metabolic rate (aquacult.htp). In the following experiment, we will attempt to examine the relationship between metabolic rate and environmental temperature in both an ectoderm and an endotherm. I predict that for the ectotherm, the metabolic rate will increase as the outside environment temperature will increase. I also predict that the metabolic rate in the endotherm will remain relatively the same as the outside environment temperature changes. I ...
