Science
The scientific world contains a wealth of knowledge that enables mankind to live the way it does. EssaysForStudent.com can help you close the gaps in your knowledge.
4,610 Essays on Science. Documents 4,081 - 4,110
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The Need for Vitamin E
The Need for Vitamin E The benefits of vitamin E are now fairly well established. Out of a controversial past it has become clear that vitamin E plays important roles as an antioxidant, in your immune system, in preventing heart disease and even in helping prevent cancer. As if this was not enough, the research continues into other beneficial effects that vitamin E may have It is not particularly easy to come by however meaning
Rating:Essay Length: 1,116 Words / 5 PagesSubmitted: June 13, 2010 -
The Need to Send Humans into Space
Humans have an innate need to explore. The desire to explore the unknown has been the primary motivator for much of humanity’s historical development. In an interview with CNN’s former American Morning anchor, Bill Hemmer, NASA’s 10th Administrator Sean O’Keefe explained that he believes exploration “is in the human heart. It’s what we are about as human beings, ... it’s about human nature.” The idea of discovery starts during infancy; people use their five
Rating:Essay Length: 2,023 Words / 9 PagesSubmitted: March 29, 2010 -
The Negative Effects of Nuclear Energy
In 1950, the first commercial nuclear power plants were constructed. The public was promised a non-polluting and resourceful type of energy, but how safe was, and is, nuclear energy? Although there are less than 500 licensed nuclear power plants in the world, many nuclear accidents have already been endangering civilian lives. More serious accidents are not just likely, but inevitable (Fairchild 29). Nuclear energy may appear to be the ideal source of energy for
Rating:Essay Length: 1,852 Words / 8 PagesSubmitted: February 3, 2010 -
The Nervous System
The nervous system is a very complex system in the body. It has many, many parts. The nervous system is divided into two main systems, the central nervous system (CNS) and the peripheral nervous system. The spinal cord and the brain make up the CNS. Its main job is to get the information from the body and send out instructions. The peripheral nervous system is made up of all of the nerves and the wiring.
Rating:Essay Length: 273 Words / 2 PagesSubmitted: November 9, 2009 -
The Neurophysiology of Nerve Impulses
Dolores Y. Barrera BIOL_2041_P6L LAB Collin College The Neurophysiology of nerve impulses Abstract: This report will discuss the effects of various substances used on a neuron creating ion conductance and ion channel behavior in the resting membrane, first for transmission signals and second using an electrical simulator creating stimulus on an Axon triggering action potentials. In these experiments; first a neuron is place in a Petri dish, it is submerged into three different substances; a
Rating:Essay Length: 3,539 Words / 15 PagesSubmitted: June 22, 2015 -
The New Hypothesis for the Origin and Evolution of The
It is impossible to briefly run through all the problems of a hypothesis advanced, so only its main assumptions almost unsupportable by factual evidence are given in the present paper. In my opinion, the hypothesis as a whole is provable. It can partly be proved by knowledge of today and expected in the future. 1. The Origin and the Structure of our Universe I suppose that the Universe we can observe and cognize consists of
Rating:Essay Length: 3,283 Words / 14 PagesSubmitted: December 1, 2009 -
The Northern Lights : Scientific, Study, and Application
The Northern lights : Scientific, study, and application The Northern lights is the name of the light phenomenon that is often seen in the northern regions of the world.The scientific name for the phenomenon is “Aurora Borealis”, often called the aurora for short.The bright lights of the aurora are collisions between electrically charged particles from the sun that enter the earth'satmosphere.Since all the planets in our galaxcy are exposed to solar wind their atmospheres are
Rating:Essay Length: 1,178 Words / 5 PagesSubmitted: January 18, 2010 -
The Norway Rat
The Norway Rat is also known as the house rat, brown rat, wharf rat, sewer rat, and water rat. It was first introduced into the United States by European settlers and trading ships around 1775. It is now the most widely distributed rat species in North America and can be found in all states. The Norway rat is larger, stronger, more aggressive, and better adapted for producing young and surviving in colder climates than is
Rating:Essay Length: 472 Words / 2 PagesSubmitted: December 27, 2009 -
The Nuclear Accident in Chernobyl
Matthew Wagner March 2, 2001 2nd hour The Nuclear Accident in Chernobyl The main door, almost blocked by overgrown bushes and weeds, rattles in the cold Ukrainian wind. The former day-care center’s rooms are a mess of abandoned dolls, stuffed animals, tiny shoes, and broken glass. Water from melting snow on the roof drips through cracks in the concrete ceiling. Between rows of metal cribs, child-size gas masks peer up from the floor where they
Rating:Essay Length: 665 Words / 3 PagesSubmitted: April 13, 2010 -
The Nucleus Brain of the Cell
Brain of the Cell The nucleus is literally a membrane-bound organelle and is surrounded by a double membrane. I feel that the nucleus is of the greatest importance in the cell because it is the control center that oversees the metabolic functioning of the cell and it directs all the cells activities. The nucleus is like the head of the cell and without a head the rest of the body is useless. It is the
Rating:Essay Length: 622 Words / 3 PagesSubmitted: April 8, 2010 -
The Observation of Ants
The Observation of Ants Introduction Myrmecology has been around since the late 18th and early 19th century. Myrmecology is derived from the Greek word Murmek, which means ant. There are three main names that are most noteworthy: Linne who produced “Systemae Naturae” which he describes eighteen species of ants. Fabricius created five more genera and further described other species. Latreille was the most significant, he collected and studied the ants of Europe and described
Rating:Essay Length: 686 Words / 3 PagesSubmitted: February 6, 2010 -
The Ocean
The Ocean The Ocean is the most important resource we have. It provides us with food, transportation, electricity, and it even regulates and purifies our water supply through the process of evaporation, condensation, and precipitation. Without it, we would not be able to survive. The Atlantic, Indian, and Pacific oceans are the three major oceans. There are several smaller bodies of water that are considered parts of these oceans include the Caribbean Sea, the Caspian
Rating:Essay Length: 1,166 Words / 5 PagesSubmitted: January 15, 2010 -
The Organic Revolution
“You are what you eat”, or so they say. In today’s supermarkets, organic foods are everywhere. Not only are there organic fruits and vegetables, but there are also organic dairy products, organic meats, organic convenience foods, organic wine, beer, coffee, tea and even clothes made with organic cotton. All of these choices have made organic foods the “fastest-growing segment of the grocery industry.” The Organic Trade Association (OTA), in its “Business Facts” fact sheet
Rating:Essay Length: 1,566 Words / 7 PagesSubmitted: January 2, 2010 -
The Origin of Sex
Eukaryotic cells reproduce sexually, involving the fusion of two gametes. Each gamete contains one set of chromosomes and is called haploid where as the zygote formed when two gametes combine is known as a zygote and is diploid (contains 2 sets of chromosomes). Today’s gene pool consists of genes that have been passed down many generations from common ancestors. The species is an evolving unit sharing a common gene pool. The sexual process and reproduction
Rating:Essay Length: 880 Words / 4 PagesSubmitted: December 13, 2009 -
The Origins of an Epidemic: Turning Hiv Against Itself
The Origins of an Epidemic: Turning HIV against Itself Natalie Simmons Axia College of University of Phoenix Utilizing Information in College Writing Jon Peterson August 26, 2007 The Origins of an Epidemic: Turning HIV against Itself In July 1981, The Center for Disease Control and Prevention, along with New York Times reported an abnormally large number of reports of a rare form of cancer, among gay men. The disease at that time was identified as
Rating:Essay Length: 1,795 Words / 8 PagesSubmitted: March 15, 2010 -
The Origins of the Computer
The Origins of the Computer This report is to be distributed freely and not to be sold for profit ect. This report can be modifyed as long as you keep in mind that you didn't write it. And you are not to hand in this report claiming credit for it heheh. The Roman Empire, founded by Augustus Caesar in 27 B.C. and lasting in Western Europe for 500 years, reorganized for world politics and economics.
Rating:Essay Length: 398 Words / 2 PagesSubmitted: November 26, 2009 -
The Ozone Depletion Phenomenon
Summary Like an infection that grows more and more virulent, the continent-size hole in Earth's ozone layer keeps getting bigger and bigger. Each year since the late 1970s, much of the protective layer of stratospheric ozone above Antarctica has disappeared during September, creating what is popularly known as the ozone hole. The Antarctic hole now measures about 9 million square miles, nearly the size of North America. Less dramatic, still significant, depletion of ozone levels
Rating:Essay Length: 1,963 Words / 8 PagesSubmitted: January 22, 2010 -
The Ozone Layer
The Ozone layer Since the 1960’s the ozone layer has greatly depreciated because of man made compounds. The thinning of the Ozone layer causes many problems to the Earth’s environment and animals. When the Ozone layer thins out more UV rays reach the Earth’s surface from the sun. Three effects this can have is Skin cancer, reduction in the production of crops and the destruction of phytoplankton. There are many different compounds that cause the
Rating:Essay Length: 697 Words / 3 PagesSubmitted: January 22, 2010 -
The Ozone Layer
The word Ozone originates from the Greek word "ozein" meaning ‘to smell’. Ozone is a toxic, gaseous, bluish molecule which has a strong odour and contains three Oxygen atoms with the formula O3. The ozone is situated in the in the part of the atmosphere called the Stratosphere about 12-35 km above the Earth’s surface [1]. Ozone is formed when an oxygen molecule (O2) in the stratosphere is broken into two oxygen atoms (O +
Rating:Essay Length: 2,221 Words / 9 PagesSubmitted: June 12, 2010 -
The Panda’s Thumb - Stephen Jay Gould
The Panda’s Thumb: More Reflections in Natural History Stephen Jay Gould With a touch of humor, geology, evolutionary theory, biology, cartoon characters and even some references to baseball, The Panda’s Thumb definitely makes excellent reading for people with all types of interests. The old clichй, “Don’t judge a book by its cover,” or in this case, title, holds true for The Panda’s Thumb. Theories concerning adaptations of the panda are only a fraction of the
Rating:Essay Length: 748 Words / 3 PagesSubmitted: November 28, 2009 -
The Past Vs Now - Diseases
The Past Vs Now Many people in the past used to think that illness came from bad spirits or that their god where mad at them. Now we know that it is caused by person to person, environment, animal bite, contaminated objects, and food that people eat. Over the past century people have come up with more cures ,vaccines, and technology to help the medical field. Many doctors and normal people have helped the medical
Rating:Essay Length: 676 Words / 3 PagesSubmitted: December 20, 2009 -
The Pepsi-Cola Story
The Pepsi-Cola Story Summer of 1898, a young pharmacist Caleb Bradham looking for ways to attract people to his pharmacy invented the beverage now known around the world as Pepsi-Cola. After the first advertisement the sales of the new soft drink began to go up. Knowing the importance of good distribution system Pepsi was one of the first to switch from horse drawn transport to motor vehicles. Throughout its existence Pepsi adjusted its marketing strategies
Rating:Essay Length: 936 Words / 4 PagesSubmitted: February 9, 2010 -
The Performance of the Nursing Schools in the Prc Nursing Board Examinations
THE PERFORMANCE OF THE NURSING SCHOOLS IN THE PRC NURSING BOARD EXAMINATIONS A Thesis Presented to The Faculty of the College of Nursing Our Lady of Fatima University In Partial Fulfillment of the Requirements for the Degree Bachelor of Science in Nursing By Murielle Vissia O. Ramos October 2006 APPROVAL SHEET This thesis entitled THE PERFORMANCE OF THE NURSING SCHOOLS IN THE PRC NURSING BOARD EXAMINATIONS prepared and submitted by Murielle Vissia O. Ramos in
Rating:Essay Length: 527 Words / 3 PagesSubmitted: April 29, 2010 -
The Person That I Admire the Most in My Life
WS Journal Editor’s Name: First Draft Paragraph Name: TAING SOVISAL Class: M2.2 Lecturer: KONG VENDY Date: 30/09/13 The Person that I Admire the Most in My Life My mother is the most admiring person in my life. She looks a bit chubby but healthy like a wealthy woman. She has long-bronze-straight hair seem Barbie’s. Her jet-black eyes look similar to Rihanna’s. My mother also has a pointed nose which likes a European lady. Besides these
Rating:Essay Length: 468 Words / 2 PagesSubmitted: July 1, 2014 -
The Phenomenon of Superconductivity
The electrical resistivity of a metal arises from the interactions of the conduction electrons with impurities, defects and the vibrating ions of the lattice. As the temperature is lowered, the amplitudes of the lattice vibrations diminish, so one would expect the resistivity also to decrease gradually toward a small, but finite, value determined by the impurities and defects. This behavior is manifested by many materials. In 1911 H. Kamerlingh Onnes discovered that as the temperature
Rating:Essay Length: 285 Words / 2 PagesSubmitted: May 28, 2010 -
The Physic Concepts in the Designing of Concert Halls
A very important but little known acoustical phenomena is the Inverse Square Law. As a sound wave propagates spherically, the sound energy is distributed over the ever-increasing surface diameter of the wave front surface. So, when the distance from the source is doubled, the energy carried by the sound is spread over double the distance in all directions, or four times the original area. This means that the intensity will be reduced to a quarter
Rating:Essay Length: 694 Words / 3 PagesSubmitted: February 28, 2010 -
The Physics of Santa and His Reindeer By: Masih Yo! Ho! Ho!
The Physics of Santa and His Reindeer By: Masih Yo! ho! Ho! No known species of reindeer can fly. BUT there are 300,000 species of living organisms yet to be classified, and while most of these are insects and germs, this does not COMPLETELY rule out flying reindeer which only Santa has ever seen. There are two billion children (persons under 18) in the world. BUT since Santa doesn't appear to handle the Muslim, Hindu,
Rating:Essay Length: 698 Words / 3 PagesSubmitted: March 18, 2010 -
The Phytoremediation Capabilities of Duckweed
The Phytoremediation Capabilities of Duckweed Introduction Plants require a large diversity of nutrients to grow, most of which are provided by the soil. However, some plants require application of fertilizers for additional support in growth. Application of fertilizers in fields can cause leaching and run offs of nutrients into surrounding waterways (Trewavas 2004). An excess of nutrients can be harmful for some plants, but species such as duckweed, Lemna Minor, are known for their
Rating:Essay Length: 1,153 Words / 5 PagesSubmitted: May 31, 2019 -
The Pill
This paper is a compilation of the research I have gathered pertaining to a birth contraceptive commonly referred to as “the pill.” Before this drug was created, women had few reliable methods of birth control. The oldest practices were the withdrawal and rhythm methods. Some women would make a homemade herbal douche in efforts of preventing pregnancy. The first big breakthrough in birth contraception was lead by Charles Goodyear in 1839. Condoms, intrauterine devices, douching
Rating:Essay Length: 512 Words / 3 PagesSubmitted: May 24, 2010 -
The Pineal Gland
The pineal gland is a small reddish-gray body and is about 8 mm in size for humans. It's located between the laterally positioned thalamic bodies and it is part of the epithalamus. The pineal gland consists mainly of pinealocytes, but it has been identified with four other types of cell types too. The pineal body does have nervous tissue, and consists of follicles lined by epithilium and contianed by connective tissue. These follicles contain a
Rating:Essay Length: 319 Words / 2 PagesSubmitted: December 9, 2009