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Science Online Essays


Air Pollution
Number of words: 1414 | Number of pages: 6

... 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 brings toxic materials into the body. The small particles cause chronic bronchitis, bronchial asthma, emphysema and lung cancer (Hodges 59). The second type is sulfur oxides which come from the burning of coal and industrial p ...

Center Of Gravity
Number of words: 958 | Number of pages: 4

... a nose dive into the ground. If the center of gravity is too far aft (back) the plane will fall out of control. You must limit the weight and its positioning on board the aircraft to prevent these occurrences from happening. The engineers design an airplane so that it has a maximum weight capacity of passengers, cargo, fuel, and etc... The engineers design an airplane so that the center of gravity must stay within certain limits. Any weight added to an airplane may change the center of gravity, but if the weight you put on board is within the plane's maximum weight capacity and within the center of gravity limits the airplane will keep flying safely. Another way to keep the center of gra ...

Albinism
Number of words: 644 | Number of pages: 3

... development. This can be inherited by an dominant or recessive trait. In complete , there is lack of pigmentation in skin and hair, as well as in retinal and iris tissue; in incomplete , skin and hair may vary from pale to normal; in ocular , function may vary from norma to impaired. Impairments may involve the retina and iris. If a person has then they usually have somewhere between 20/70 and 20/200 visual. Ty-Neg or also called type 1A results from a genetic defect in an enzyme called tyrosinase. Tyrosinase helps the body to change the amino acid tyrosine into pigment. An amino acid is a building block of protien. is passed from parent to their kid through genes. For nearly all types o ...

The Environmental Impact Of Eating Beef And Dairy Products
Number of words: 1835 | Number of pages: 7

... animal eats its way through 900 pounds of vegetation a month. Without plants to anchor the soil, absorb the water, and recycle the nutrients, the land has become increasingly vulnerable to wind and water erosion. More than 60 percent of the world's rangeland has been damaged by overgrazing during the past half century. Cattle ranching has also been linked to Global Warming. The grain-fed-cattle complex is now a significant factor in the emission of three of the gases that cause the greenhouse effect- methane, carbon dioxide, and nitrous oxides- and is likely to play an even larger role in Global Warming in the coming decades. The burning of fossil fuels accounted for nearly two- t ...

What Is Macroevolution?
Number of words: 1087 | Number of pages: 4

... the new ecological niches in which they find themselves, they tend to stay pretty much as they are for the rest of their existence. Phyletic gradualism suggests that species continue to adapt to new challenges over the course of their history. Species selection and species sorting theories claim that there are macroevolutionary processes going on that make it more or less likely that certain species will exist for very long before becoming extinct, in a kind of parallel to what happens to genes in microevolution. The history of the concept of macroevolution In the "modern synthesis" of neo-Darwinism, which developed in the period from 1930 to 1950 with the reconciliation of evolution b ...

Organic Compounds
Number of words: 1100 | Number of pages: 4

... chains, the compounds are called aliphatic compounds. If the atoms are linked in rings, the compounds are called cyclic compounds. (pg.581, ...ibid...) (Biology Pamphlet) In terms of naming organic compounds the number of carbon-carbon chains are named using the prefixes below: meth- 1 carbon eth- 2 prop- 3 but- 4 pent- 5 hex- 6 hept- 7 oct- 8 non- 9 dec- 10 The simplest group of hydrocarbons is the alkanes. The carbon atom in these hydrocarbons is always saturated with hydrogen atoms. The first three members of the alkane family are methane - CH , ethane C H , and propane - C ...

Power Of The Atom
Number of words: 699 | Number of pages: 3

... time to get a response. In 1886, a man by the name of Alexander Graham Bell developed an interesting object, that gave you the capability of talking live with one person, other then yourself. This object later became known as the well respected telephone. Although when Bell first invented the phone there were many kinks that needed to be worked out. And over time, after being constantly worked with and being revised the telephone was close to perfection. It took sometime for the phone to really catch on, but when people began to see how convenient it was, families everywhere went out and purchase one. Imagine going one day, 24 hours without using the phone once. I don’ t know about you, b ...

Hypnosis 2
Number of words: 1809 | Number of pages: 7

... can be implemented into the mind. The subcon mind can then execute these imbedded commands without any intervening of the conscious mind and body (Hunter). Hypnosis was first confirmed to be real by a Swedish therapist named Anton Mesmer around 1775. After publishing papers describing the Alpha Mind State, he named the entire process “Mesmerism”. When a person was hypnotized, they were considered “Mesmerized” (Hyde 84). He would mesmerize them by swinging a watch in front of them while implementing the suggestions that send someone into a hypnotic sleep. More on this will be explained later on. It wasn’t until 1841 that a doctor name James Baird gave th ...

Dvd
Number of words: 511 | Number of pages: 2

... DVD-RAM DVD-RAM stands for Digital Versatile Disc - Random Access Memory, and is the approved format by the Official DVD Forum. DVD-RAM are dual sided and can hold up to 2.6 gigabytes per side. They use phase-change as a recording material, “wobbled land and groove” recording method, embossed pits for header information, Zoned Constant Linear Velocity (ZCLV) rotational control, and is a random-access, non-sequential medium. DVD-RAM-Compatible readers will require servos to handle switching between the lands and grooves. DVD-RAM drives will also need a decoder to handle scattered 32K ECC Blocks, something not needed for DVD-ROM and DVD+RW, since their blocks are contiguous. ...

Inventions Benefited Society
Number of words: 463 | Number of pages: 2

... have allowed us to do many things from the comfort of our homes that could never be done before; such as talking with distant friends and relatives, buying merchandise, doing research, and a steadily increasing number of other things. At nearly any time of day we can buy something with a credit card, or fill out a form with personal information such as a loan application, job application or insurance form. Years ago, sending this amount of personal data was impossible. Now, with the advances of computer technology, we can do what we were once not able to do; such as getting in touch with the bank and transferring money while we are miles away from the banks. Computers have ...

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