Science Essays
Endangered Species
Endangered Species Endangered Species Endangered species are living things whose population is so reduced that they are threatened with extinction. Thousands of species are included in this category. The International Union for the Conservation of nature and Natural Resources publishes a list of threatened mammals, birds, reptiles, amphibians, and (many people do not consider them) plants .CAUSES OF EXTINCTION Millions of years before humans, extinction of living things was linked to geol...
Endangered species 2
Endangered species 2 GIANT PANDA CAPTIVE BREEDING WWF's policy on captive breeding is that: "The productive management of captive pandas would be helpful in ensuring the long-term survival of the species. All potential breeding animals in captivity should be included in an integrated programme, whose main aim should be to provide animals for re-introduction into the wild. WWF urges all institutions in the world which currently hold pandas to contribute fully to this breeding progr...
Endangered species 3
Endangered species 3 Endangered Species All over the world there are species of animals and plants that are said to be "endangered". By calling them endangered, scientists say that they think the species will become extinct if something isn't done about them. Many more species are now threatened with extinction than ther should be because of many reasons. A species becomes endangered when there are fewer and fewer individuals of the species each year. There are many endagered species li...
Endangered species of south
Endangered species of south Endangered Species of South America Endangered species are plant and animal species that are in danger of extinction, the dying off of all individuals of a species. Over 19,000 plant species and 5000 animal species around the globe are classified as endangered, and many thousands more become extinct each year before biologists can identify them (Microsoft 1). The primary cause of species extinction or endangerment are habitat destruction, commercial exploit...
Encephalitis
Encephalitis - ENCEPHALITIS Encephalitis literally means an inflammation of the brain, but it usually refers to brain inflammation caused by a virus. It may also be called “acute viral encephalitis or aseptic encephalitis”. Encephalitis is an infectious disease of the Central Nervous System characterized by pathologic changes in both the gray and white matter of the spinal cord and brain. It may be due to specific disease entity such as rabies or an arthropod-borne v...
Encephalitis
Encephalitis Encephalitis is a disorder associated to any disease affecting the central nervous system causing inflammation of the brain. Due to the fact that the disorder is so common in many hundreds of diseases it is hard to narrow the disorder down. Many diseases can cause this disorder such as: meningitis, epilepsy and many parasitic infections, which attack the brain tissue and meninges, causing them to swell and push against the skull. Minor and serious symptoms can occur ...
Endangerd Species
Endangerd Species Abstract: For Endangered Species I am doing my project on endangered species. In the world there are a lot of endangered species for example: birds, insects, tigers, whales and many more. I have learned many things from this project on how the animals get endangered and ways how to help these animals. I learned that we should recycle because the more trees that we cut down the more homes for animals we demolish. We should all stop hunting animals for plea...
Electrical energy
Electrical energy Electrical Energy A capacitor can store electrical energy. Connecting it across a resistor or other device discharges it. Across the resistor there is a potential difference that creates the electric current. When the charge in the capacitor decreases, at the same time the voltage decreases. As a result the rate at which the capacitor is discharged, which is the current, is decreased. The outcome of this is that the capacitor will be completely discharged meaning that...
Electronic Commerce
Electronic Commerce Electronic Commerce The last decade has seen the rise of many new technological developments, one of the most prominent of these developments has been the internet. The Internet has already managed to weave itself into our daily lives where we use it for the simple communication of e-mail or to retrieving large volumes of information. More recently the Internet has been incorporated into businesses which have ranged from 'online' grocers to travel agents and real...
Electronic stimulation
Electronic stimulation Medicine and electronics are rapidly becoming a common partnership. Electronics and medicine has been around for over a hundred years. This application can be seen in early X-ray machines, as well as early doctors and healers who felt that electricity possessed something special that assisted the healing process of many illnesses and injuries. But it has not been the last forty to fifty years that the development and refinement of electricity as medical agent has oc...
Electronics logic probe
Electronics- logic probe LOGIC PROBE SUMMARY Logic Probe is one of the basic troubleshooting tools for common electronic logic circuits (TTL circuits). Almost all video game circuit boards are built using TTL chips. These chips will occasionally fail and the Logic Probe is a tool that affords us a look into what may be failing, and it��s a very handy measuring device used to determine output logic levels. The 555 timer IC is used in this circuit. The 555 timer IC uses power supply v...
Elephantiasis
Elephantiasis My report is on elephantiasis. It is a disease that is mostly found in the tropics. This disease is a condition in which a part of the body becomes grossly enlarged due to a thickening of the skin and the underlying tissues. It results from a long term interference with the flow of lymphatic fluid away from these tissues. The most frequently affected part is the leg. The most common cause of lymphatic obstruction is filaries. Filaries is caused chiefly by t...
Egyptian bedouins
Egyptian bedouins The Life of the Egyptian Bedouins The Bedouin people of Egypt can easily be described as a people with no place to call a home. Studying the Bedouins show that they have a deep and unique culture. They do not get involved in politics, and they live a humble and modest life. The Bedouin Nomads of Egypt are predominantly Muslim. Therefore, their beliefs, practices and rituals will be the same as that of a common Muslim. I will discuss the doings of Muslims but more...
El Nino La Nina
El Nino La Nina As the easterly trade winds decrease, the western Pacific's warm water flows toward the Americas. This giant mass of warm water flows over the colder water of the eastern Pacific. As this occurs, we get what is called El Nino, or the child. Its name ("the child") is derived from its arrival during the Christmas season. Typical weather patterns of El Nino include an increase in surface temperatures as well as an increase in cloud cover over the equator. Also, for unknown rea...
El nino
El-nino There's trouble in the air. Specifically, in the west coast of the Americas, where the sea surface has been heated to abnormal extremes by an ominous, intermittent flood of hot water called El-Nino. The term. "El-Nino," which means "the child," was originally in reference to a warm current arriving annually during the Christmas season off the coast of Peru and Ecuador. The term was later restricted to the particularly strong periodic warmings that disrupt the local fish and bird p...
Electric charge
Electric charge In some Greek experiments, objects attracted each other after rubbing. Other experiments produced objects that pushed away, or repelled, each other. The evidence showed that electric force made matter either attract or repel other matter. Electric force is caused by electric charge. Electric charge is a property of the bits of matter within atoms. Electric force can cause matter to attract or repel because there are two kinds of charge – positive and negative charge....
Effects of massage theropy on the central nervous system
Effects of massage theropy on the central nervous system QUESTION: "What general effects does massage have on the parasympathetic and sympathetic divisions of the autonomic nervous system and the endocrine system? Also discuss the general relationship between the hypothalamus and the pituitary gland and various target organs." INTRODUCTION: This essay explores the effects of a variety of massage approaches on the autonomic nervous system and the endocrine system. Swedish massage, e...
Effects of murcury on the enviroment
Effects of murcury on the enviroment LA Gear and other shoe companies have been using mercury to make the switch active in their shoe that light up when a person walks. The shoes should return to the company after the user is done with the to be recycled. Since LA never advertises this, people just thrown them away like any other pair of old shoes. Eventually the shoes end up in a land fill and the mercury can leak out into the environment. Mercury is a highly toxic substance and is the ...
Effects of secondhand smoke
Effects of secondhand smoke Imagine your child wheezing, working hard for every breath he takes. You rush him to the Emergency Room. He is suffering from another severe asthma attack, which he developed when he was a baby. Why? Your child has been expose to secondhand smoke. This scenario may not be your community�s worst problem, but I just want to address some concerns on the affects of secondhand smoke to children�s health and their future. Secondhand smoke affects everybody, b...
Effects of smoking 2
Effects of smoking 2 One of the most addictive and destructive, over-the-counter drugs known to modern man. One of the few legal substances available in stores that can injure or kill when used as intended. Most rational people know this as a fact, yet many continue to smoke. Some smokers know, deep in their hearts, they want to quit. Others are quite content to keep on puffing because they �enjoy� it so much. Why would seemingly intelligent people continue to smoke, knowing full we...
Effects of technology
Effects of technology The Effects of Technology There is no escape from technology. In most cases this is not a problem though. Many people respect and admire technology because it is there to benefit them. Without the technological advances we have had over the years, the world would not be what it is today. What people don’t understand is that technology can actually be a bad thing. In society today, people are looking for more and more ways to be entertained, and all it i...
Effects Of Marijuana
Effects Of Marijuana The Effects of Marijuana Marijuana is a mood altering or psychoactive drug that has many nicknames, such as pot, weed, ganja, sensi, herb, and others. It is an ancient drug that dates back to hundreds of years to Asia. Many cultures have used it during meditation, religious worship, and for intoxication. Marijuana itself comes from the Indian Hemp plant. It is the third most widely used drug in the United States, according to a survey taken in 1988, ...
Effects of Smoking
Effects of Smoking According to the American Lung Association, there are an estimated 50 million people who smoke. For some reason people just do not fully understand the risks they take by smoking. Cigarette smoking is a frequent cause for many health problems with smokers. To begin with, there are many hazardous ingredients in cigarette tobacco. Some of the ingredients are poisonous or addictive. Cigarette smoke produces thousands of chemicals that are hazardous to a s...
Effects of drugs on pregnet women
Effects of drugs on pregnet women Pregnant women that smoke cigarettes on a daily basis can greatly harm their fetus. The Tobacco smoke in cigarettes greatly reduces fetal growth through the presence of nicotine, carbon monoxide, hydrogen cyanide, cadmium and various other aromatic hydrocarbons, but the two most dangerous chemicals that are found in cigarettes are nicotine and carbon monoxide. Nicotine causes the babies heart rate to speed up, reduces placental vascularisation, constricts th...
Effects of excessive pesticide
Effects of excessive pesticide Introduction What is the goal of agriculture? Mainly, it is to produce healthy food, affordable for consumers to purchase, while ensuring that farmers are able to earn a decent income. Recently, with greater environmental awareness in society in general, it is also now very important to protect the agricultural environment. This is a big challenge for farmers as they must still obtain reasonable yields and produce quality produce in order to meet the demands ...