Science Essays
Canadian black bear
Canadian black bear Canadian Black Bear The Canadian Black Bear There are 8 kinds of bears (Ursus) in the world but I chose the North American Black bear (Ursus americanus). I will be covering general information about the bear such as their size, weight, color, food, etc., but I will concentrate mainly on the hibernating cycle of the black bear. There are from 400,000 to 750,00 black bears in North America, and they weigh from 130 to 660 pounds with a body length of 50 to 75 inches. Thei...
Cancer 2
Cancer 2 Introduction to Cancer The individual unruly cell that has escaped the normal regulatory control mechanisms is the basic unit of cancer. Inside the nucleus is a substance called DNA, which contains genetic information for the body, organized in units called genes. These genes contain the complete plans for the body. They determine weather you have a blue or a green eye, weather you will have two or four legs, etc. They send out information that tells the cell what chem...
Cancer 3
Cancer 3 A Cure for Osteoarthritis Glucosamine Sulfate For many people, joint problems are a serious issue. Those affected by joint problems ranges from the highly athletic professional sports players to the lesser active elders with osteoarthritis. Though there are several options to deal with sore and injured joints, the use of supplements seem to be on the rise. One of the most successful supplements used today for joint support and repair is glucosamine sulfate. Not only can g...
Cancer 4
Cancer 4 Cancer Right now, cancer is one of the most feared diseases in the world. In the early 1990s almost 6 million new cancer cases developed and more than 4 million deaths from cancers occurred. Also more than one-fifth of all deaths were caused by cancer and it has been predicted, by the American Cancer Society, that about 33% of Americans will eventually develop this disease. This is a huge disease that is killing people all over the world. The field of cancer study is calle...
Caffeine 2
Caffeine 2 Caffeine As can be seen above, caffeine consists of two carbon/nitrogen rings with oxygen and methyl groups as substituents. The fused rings are similar to those in adenine only the substituents differ. Caffeine is found in coffee, tea, and many soft drinks. There is also some amount of caffeine in chocolate, as well as a closely related stimulant, theobromine. The caffeine in sodas is generally produced from the cola berries, and is either a by-product of the cola flavoring o...
Caffeine
Caffeine As far back as 2700 B.C.. Chinese Emperor Shen Nung regularly imbibed hot brewed tea. Coffee was regarded by some Westerners as "the devil's brew" until the late sixteenth century, when Pope Clement VIII tasted it and gave it his blessing. Caffeine is the most popular drug in the world. Coffee consumption in the U.S. has actually been steadily declining since the l960s. The main sources of caffeine are, coffee beans, tea leaves, cocoa pods and cola nuts. Another popular so...
California water pollution
California water pollution California Water Pollution Water pollution is the major problem in our world today. The state of California also has many water problems of it's own. Many living things suffer from polluted water. Humans, animals, and other organisms depend on water to live. So what will happen if nothing is done to save our polluted water? Or if what is being done just isn't enough to keep our water clean and safe. Fish in the ocean often get tangled in plastic rings. ...
Calories
Calories People are, by nature, very gullible, nieve and border on ignorance. There are very few that strive for understanding. Most accept what is told them by friends, the media and the government without question. Take for, instance, the calorie. Millions of Americans read the labels of food containers and worry endlessly about the number of calories that a food contains. This is a classic example of human ignorance. How can one worry about something and not know what it is, where i...
Canabis
Canabis Cannibis Sativa Throughout history marijuana has been used to serve various purposes in many different cultures. The purposes have changed over time to fit in with the current lifestyles. This pattern is also true in American history. The use of marijuana has adapted to the social climate of the time. Marijuana, whose scientific name is cannibis sativa, was mentioned in historical manuscripts as early as 2700 B. C. in China. (Grolier Electronic Encyclopedia, 1995). The cultivation of...
CLONING HAS SCIENCE GONE TOO F
CLONING HAS SCIENCE GONE TOO F CLONING: HAS SCIENCE GONE TOO FAR? INTRODUCTION For years the subject of cloning has captured the imaginations of authors, movie directors and much of the human population. Cloning is the prospect of creating an animal or even a person that is genetically identical to its "parent." Until recently the subject seemed farfetched and fictional, because no one really realized how close we had actually advanced in cloning research. It was during Fe...
Cable modems are the wave of the future
Cable modems are the wave of the future There are several different methods to achieve communication between computers. In the case of the Internet, most people use a telephone modem to establish a connection between their computer and the computer that gives them access to the Internet. Normally, the computer that gives them access to the Internet, referred to as an ISP (Internet Service Provider) can only have a limited number of users on it at any given time. In this case, users may fi...
Cable vs
Cable vs. v.90 modems Cable Modems Cable modems emerged in consumer markets as an alternative to ISDN and regular modems only a couple of years ago. Promises like speed up 30 Mbps to connect to the internet sounds very attractive given that the service charge is only $35-$55 a month. But the whole thing has been overhyped in my opinion, none of the cable companies mention that the subscribers share the bandwidth plus most cable modems use 10BaseT interface to connect to the PC or Mac which...
Cadmium and sewage sludge
Cadmium and sewage sludge Cadmium and sewage sludge This essay concentrates on the heavy metal cadmium, and its occurrence in the environment, its pathways into and out of the human body and its movement into and out of Sewage sludge. Firstly, I will provide a clear definition of the Heavy Metal Cadmium. What is Cadmium? Cadmium is a naturally occurring element in the earth�s crust. Pure cadmium is a soft silver-white metal, but this form is not common in the environment. Rather, cad...
Bubonic plague 2
Bubonic plague 2 The Bubonic Plague, or Black Death, had many negative as well as positive effects on medieval Europe. While being one of the worst and deadliest diseases in the history of the world,it indirectly helped Europe break grounds for some of the basic necessities forlife today. The Black Death erupted in the Gobi Desert in the late 1320s, but one really knows why. The plague bacillus was alive and active long before that; as Europe itself had suffered an epidemic in the 6th c...
Bulemia
Bulemia Not All Black And White Christmas is a time of joy, but the Christmas of 1988 was one of revelation for me. My best friend of 15 years unveiled her deepest, darkest, most private secret; she was bulimic. I was unfamiliar with the disorder at the time, but when she told me of her 7 year struggle with anorexia and bulimia, I had to know more, to understand the what, why, and how. The first article I found on eating disorders was in a glossy covered periodica...
Bullfrogs hearing capacity
Bullfrogs hearing capacity The bullfrog belongs to the family Ranidae and is commonly known for their deep resonant croaks, large body size and large ears (tympani). These frogs have a body size of 20cm/ 8in and have legs that are longer than the body (25cm/10in). They reside in the United States, Canada, Mexico, Africa, and many others in quiet lakes and ponds. Bullfrogs are very aggressive when defending their territories and do not hesitate to attack invaders, even if a frog. Being t...
CHEMICAL REACTIONS
CHEMICAL REACTIONS CHEMICAL REACTIONS Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named George Ernst Stahl was the first to speak of chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the...
Breast cancer in women
Breast cancer in women Breast Cancer in Women As most of us look ahead into what we expect for our future, we will envision a life of good health, success and family. What if the health factor was not good? What if the woman in the family became ill with one of the most uprising and terminal illnesses. Breast cancer is a type of cancer which develops from a mutated gene. �One in 10 American women who live to be 70 develop breast cancer, with more than 180,000new cases diagnosed ea...
Breast cancer
Breast cancer In the United States in 1995 alone, 43,063 died from breast cancer. It is the number two cancer killer and the number one cancer in females ages 15 to 54. On average if a woman gets this disease, their life expectancy drops nineteen and a half years. This cancer is within the top three cancers of all women above the age of 15, and comprises 6% of all health care costs in the U.S. totaling an astounding 35 billion dollars a year. An average woman is said to have a one in thirty ...
Breast implants
Breast implants Breast Implants Why do women get breast implants? Do the breast implants make them feel good about themselves? Breast implants are a serious threat because, there are many risks involved, there are many disorders that are possible, and there are illnesses that you could catch after the operation. According to Marian Segal, many of the women who have had breast implants don�t exactly what is in there body. Silicone contains organic compounds, which have th...
Bridging Technology and Academ
Bridging Technology and Academ Abstract The current information technology mediums, such as the Internet pose exciting new opportunities for researchers and educators and, at the same time, present numerous questions and challenges. One of the current frustrations of many faculty includes their limited conceptual grasp of how these technologies can benefit themselves and their students. For certain, the Internet as it currently exists, is largely an undefined and unrefined information...
Bridging technology and academe
Bridging technology and academe Abstract The current information technology mediums, such as the Internet pose exciting new opportunities for researchers and educators and, at the same time, present numerous questions and challenges. One of the current frustrations of many faculty includes their limited conceptual grasp of how these technologies can benefit themselves and their students. For certain, the Internet as it currently exists, is largely an undefined and unrefined informatio...
Boron
Boron Boron My report is on Boron. Boron is a hard, brittle semimetallic element with an atomic number of 5. Boron is in group 13 of the periodic table Compounds of boron, borax, have been known since early years. Although the pure element was first prepared in 1808 by a Frenchmen named Joseph Gay-Lussac as well as Baron Louis Thenard. Boron is needed for plant growth and is important for bone health in humans and other vertebrates. The atomic weig...
Botany
Botany Botany Choosing a career in botany ensures a person a wide choice of career opportunities, a fair salary, and an exciting life. If you prepare yourself with a good education and a positive attitude, you�ll be well on your way to becoming a successful botanist. Anyone can find enjoyment and fulfillment in a career field as fun and beneficial to others as botany. If you like nature and being outdoors, you might enjoy a career as an ecologist, taxonomist, conservationist, ...
Bottle rockets
Bottle rockets A rocket in its simplest form is a chamber enclosing a gas under pressure. A small opening at one end of the chamber allows the gas to escape, and in doing so provides a thrust that propels the rocket in the opposite direction. Newton�s laws can be used to explain this his laws in the simplest terms can be explained like this: First law- Objects at rest will stay at rest and objects in motion will stay in motion in a straight line unless acted upon by an unbalanced force....