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.
4,609 Essays on Science. Documents 2,161 - 2,190
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Human Homeostasis
Human Homeostasis refers to the body’s ability to physiologically regulate its inner environment to ensure its stability in response to fluctuations in the outside environment and the weather. Blood pressure Homeostasis is our body’s capability to regulate and maintain a regular and stable blood pressure. A normal blood pressure level is 120/80 mm Hg. Having a blood pressure greater than 140/90 mm Hg is considered high blood pressure or hypertension. However every person can have
Rating:Essay Length: 311 Words / 2 PagesSubmitted: December 6, 2017 -
Human Immunodeficiency Virus
HIV/AIDS Human Immunodeficiency virus (HIV) infection is one of the most devastating diseases to touch the human race. Understanding its nature, transmission, and prevention is important for everyone, and it is only through education and skills that people can practice prevention! HIV, the virus that causes acquired immune deficiency syndrome (AIDS), was first found in Africa, South America, and the Caribbean (Packer). It was related to STLV-I, which is a virus found in monkeys (Packer).
Rating:Essay Length: 1,184 Words / 5 PagesSubmitted: November 14, 2009 -
Human Immunodeficiency Virus
Human Immunodeficiency Virus: The debate, the facts, and the history since the 1980s Casey Jordan Elison Treasure Valley Community College Abstract: The exact origin of Human Immunodeficiency Virus (HIV) has been a debate and controversial topic since it was first recognized in the 1980’s. We have discovered what viruses are, their anatomy, how they affect hosts, and how they replicate, yet many viruses have continued to baffle us. A virus may or may not
Rating:Essay Length: 1,920 Words / 8 PagesSubmitted: January 28, 2010 -
Human Immunodeficiency Virus
Human immunodeficiency virus (HIV) is a retrovirus Retrovirus: They are enveloped viruses possessing an RNA genome, and replicate via a DNA intermediate. Retroviruses rely on the enzyme reverse transcriptase to perform the reverse transcription of its genome from RNA into DNA, which can then be integrated into the host's genome with an integrase enzyme. The virus then replicates as part of the cell's DNA. While transcription was classically thought to only occur from DNA to
Rating:Essay Length: 491 Words / 2 PagesSubmitted: January 29, 2010 -
Human Impacts on Island Ecosystems. (australia)
Human Impacts on island ecosystems. (Australia) There are few paleovegetation records in Australia before 18,000 years ago. To find out the history of the Australian fauna scientists used stable carbon isotopes from the emu eggshell (a flightless bird native to Australia). The samples were largely taken from Lake Eyre. The carbon composition of the eggshell tells us the composition of the bird’s diet (over 3-5 days). The emus are mixed feeders herbivores, eating leaves, shoots,
Rating:Essay Length: 1,028 Words / 5 PagesSubmitted: January 11, 2010 -
Human Nutrition
Running head: HUMAN NUTRITION Human Nutrition Shelton Holden University of Phoenix Human Nutrition SCI/220 Donna Lupinacci Jun 26, 2006 Abstract This paper will discuss how one feels about the daily intake why being recorded and if the individual followed the recommended food pyramid. Which groups of foods are underrepresented and overrepresented in the individual diet will be discuss as well. The variety of foods and choices made will be mention whether it was monotonous or
Rating:Essay Length: 690 Words / 3 PagesSubmitted: January 10, 2010 -
Human Origin Teachings
In my humble opinion, I think public schools have the right to teach about anything they want. Hence the word “public” schools, parents should have that authority as to whether or not they want their child to attend a school where teachings can get disobedient to their religious belief or not. That’s why there is a private school. Anybody can believe in God. But, when there is an answer to a problem or issue that
Rating:Essay Length: 643 Words / 3 PagesSubmitted: February 22, 2010 -
Human Population
One of the great economic problems in the world is, there are unlimited needs, but limited resources. With populations growing exponentially each year, this problem of limited resources will become more and more significant. Since recorded time, some 2000 years ago, human populations grew quite slowly never exceeding 1 billion until around 1800. Today after only about 200 years the population has swelled to over 6 billion. How have populations swelled so fast over
Rating:Essay Length: 360 Words / 2 PagesSubmitted: December 2, 2009 -
Human Remains
Human Remains Human remains is a very controversial topic in the world of science but to be more specific in the world of Anthropology. What are exactly human remains? Well human remains is described as; “The physical remains of the body of a person of Native American ancestry/ The term does not include remains or portions of remains that may reasonably be determined to have been freely given or naturally shed by the individual from
Rating:Essay Length: 399 Words / 2 PagesSubmitted: February 25, 2010 -
Human Resource Management
I- INTRODUCTION: Human Resource Management (HRM) is “activities that managers engage in to attract and retain employees and to ensure that they perform at a high level and contribute to the accomplishment of organizational goals.” (Quotation is from conversation between team members and Human Resource Manager of a famous chain Hotel.) For being the organization to be efficient and effective managers are responsible for acquiring, developing, protecting and utilizing the resources that organization needs. Human
Rating:Essay Length: 3,125 Words / 13 PagesSubmitted: November 9, 2009 -
Humans Cause Big Problems for the Environment
Humans cause big problems for the environment Global warming is a big problem in this day and age. But what’s causing global warming? Humans. At least that’s what over 90% of scientists who extensively study global warming say. You may be asking yourself, how are we causing the problem? Well, obviously humans aren’t outside with space heaters, warming things up a bit. It’s small things that we wouldn’t even consider such as driving, clearing and
Rating:Essay Length: 805 Words / 4 PagesSubmitted: January 12, 2010 -
Humans in Space
Leo F. Buscaqlia, an American guru and advocate of the power of love, once said “The person who risks nothing, does nothing, has nothing, is nothing, and becomes nothing. He may avoid suffering and sorrow, but he simply cannot learn and feel and change and grow and love and live.” His message is that if you never set a goal, take a risk, and try to accomplish something, you can never gain anything. The same
Rating:Essay Length: 1,425 Words / 6 PagesSubmitted: November 19, 2009 -
Humans: How We Are Destroying the World Around Us
Dave Hennesey Mr. Gregg AP Chemistry 2 February 2005 Humans: How We Are Destroying the World Around Us This generation and also future ones will suffer because of this, and us humans are mostly to blame. What are humans responsible for? We are responsible for endangering the nature and health of our ecosystems. One way we damage our ecosystem is by polluting the environment. Everyday millions of people use automobiles, trains, and airplanes to travel.
Rating:Essay Length: 1,084 Words / 5 PagesSubmitted: November 17, 2009 -
Huntington Disease
Throughout human history scientists wondered what a disease is, and how they can prevent it. There are different types of diseases. Some diseases are spread by microbes and viruses, and some are genetic, also called disorders. Genetic disorder is a disease that is caused by an abnormality in one’s DNA. The abnormality, such as mutation, may occur in the single gene as well as in the whole chromosome or in a set of chromosomes. [9]
Rating:Essay Length: 1,931 Words / 8 PagesSubmitted: December 20, 2009 -
Hurricane Katrina
The five -- a man, a woman and three children -- apparently were overcome by carbon monoxide from a generator they were using after the hurricane knocked out the electricity over the weekend, authorities said. The children's aunt discovered the bodies after going to check on the group. Rita roared ashore Saturday morning, slamming the refinery towns of Beaumont and Port Arthur, Texas, as well as Lake Charles, La., after an epic evacuation that emptied
Rating:Essay Length: 826 Words / 4 PagesSubmitted: March 30, 2010 -
Hurricane Katrina
We all know the sad weather disaster that happened August 29th, 2005. It was on the news day after day it was Hurricane Katrina. What a tragedy that many people died in. The water covered people’s houses from bottom to top. The way of getting around however was by boats. The wind was up to 140 mph. Up goes the ocean 20 feet above the normal seat level. Emily Sohn says, “Louisiana and Mississippi
Rating:Essay Length: 282 Words / 2 PagesSubmitted: May 3, 2010 -
Hurricane Katrina: Development and Devastation
Hurricane Katrina: Development and Devastation Hurricane Katrina was one of the strongest storm systems to ever collide with the coastal United States in the last century. Strong winds sustained during landfall of over 140 mph combined with a very low central pressure (920 mb) to wreak havoc on many coastal communities in ways not seen before in the US (1). Despite monitoring the storms development, tracking its movement, and issuing early warnings, Hurricane Katrina has
Rating:Essay Length: 1,387 Words / 6 PagesSubmitted: February 13, 2010 -
Hurricanes
Hurricanes Hurricanes get their start over the warm tropical waters of the North Atlantic Ocean near the equator. Most hurricanes appear in late summer or early fall, when sea temperatures are at their highest. The warm waters heats the air above it, and the updrafts of warm, moist air begin to rise. Day after day the fluffy cumuli form atop the updrafts. But the cloud tops rarely rise higher than about 6,000 feet. At that
Rating:Essay Length: 600 Words / 3 PagesSubmitted: December 6, 2008 -
Hurricanes
INTRODUCTION The term “hurricane” is a name given to violent storms that originate over the tropical or subtropical waters of the Atlantic Ocean, Caribbean Sea, Gulf of Mexico, or North Pacific Ocean. Hurricanes need warm tropical oceans, moisture and light winds above them in order to maintain themselves active. Those storms other than the ones considered typhoons are known as tropical cyclones, which is the general name for all such storms including hurricanes and typhoons.
Rating:Essay Length: 1,414 Words / 6 PagesSubmitted: December 1, 2009 -
Hurricanes
INTRODUCTION The term “hurricane” is a name given to violent storms that originate over the tropical or subtropical waters of the Atlantic Ocean, Caribbean Sea, Gulf of Mexico, or North Pacific Ocean. Hurricanes need warm tropical oceans, moisture and light winds above them in order to maintain themselves active. Those storms other than the ones considered typhoons are known as tropical cyclones, which is the general name for all such storms including hurricanes and typhoons.
Rating:Essay Length: 1,414 Words / 6 PagesSubmitted: December 4, 2009 -
Hurricanes
Hurricanes are one of the deadliest and most expensive natural disasters around. They are more common in areas of humid yet moist weather so they are very foreign to certain places. But to the places were hurricanes are the norm, the people take them extremely seriously because they kill people and ruin countless amounts of property. Hurricanes can attack and harm people in so many ways they can kill people, leave them homeless, it
Rating:Essay Length: 557 Words / 3 PagesSubmitted: December 19, 2009 -
Hurricanes
Hurricane, what does it mean? What do hurricanes do? What kind of powers do they possess? Where regions of the world are mostly affected by these hurricanes? All these questions I plan to answer in the following paragraphs. One thing we do know for sure is that a hurricane is one of the most devastating storms that Mother Nature has to offer. We also know that hurricanes cause a lot of damage to homes, businesses,
Rating:Essay Length: 304 Words / 2 PagesSubmitted: December 27, 2009 -
Hurricanes
Hurricanes Hurricanes are severe tropical storms that form in the southern Atlantic Ocean, Caribbean Sea, Gulf of Mexico, and in the eastern Pacific Ocean. Hurricanes gather heat and energy through contact with warm ocean waters. Evaporation from the seawater increases their power. Hurricanes need warm tropical oceans, moisture and light winds above them. If the right conditions last long enough, a hurricane can produce violent winds, incredible waves, torrential rains and floods. In other regions
Rating:Essay Length: 405 Words / 2 PagesSubmitted: February 10, 2010 -
Hurricanes
Hurricanes Hurricanes summer is over and fall has arrived but many people to the south of us are observing another season hurricane season. According to the Montshire Museum of Science, hurricanes usually occur in the North Atlantic from June to November, with most of them in September. On average, between six to eight hurricanes form in the North Atlantic or North Pacific each year (Montshire), however, as many as 15 have occurred in the Atlantic
Rating:Essay Length: 1,116 Words / 5 PagesSubmitted: February 13, 2010 -
Hurricanes in Brief
Hurricanes and typhoons are large and sometimes intensely violent storm systems. In meteorological terms, they are tropical cyclones that have maximum sustained winds of at least 120 km/h (75 mph). Atlantic and eastern Pacific storms are called hurricanes, from the West Indian huracan ("big wind"), whereas western Pacific storms are called typhoons, from the Chinese taifun, "great wind." The primary energy source for a tropical cyclone is the latent heat released when water vapor condenses.
Rating:Essay Length: 1,140 Words / 5 PagesSubmitted: January 5, 2010 -
Hybrid Cars
Hybrid Cars – A Promising New Technology “According to Hiroyuki Watanabe, director of Toyota Motor Co., the age of the internal combustion engine is over.” (qtd. in Cothran) In the last decade automobile technology developed fast, and now on auto market there is a bigger choice of cars, including hybrid cars. In a few months I am going to purchase a new car. Should I buy a regular gas-fueled car or a hybrid? Gas Prices
Rating:Essay Length: 1,214 Words / 5 PagesSubmitted: February 24, 2010 -
Hybrid Cars
A few years ago, at the ripe old age of eight, I had a deep curiosity to explore anything that moves. Actually I’ve been like that ever since I could walk, but at the age of eight I began to research how engines work, and where fuel comes from. Once I got an explanation that satisfied me, I began to wonder if our supply of fuel will last forever, and I started to learn about
Rating:Essay Length: 1,026 Words / 5 PagesSubmitted: April 22, 2010 -
Hybrid Cars: The Future of Air Pollution Control
The current vehicles that are powered by gasoline pollute, but as technologies improve and the human way of life changes alternatively powered vehicles enter the automotive industry. These vehicles developed to achieve better gas mileage and to help slow the production of the gasses that cause Global Warming. The hybrid vehicle is one of the newest and most popular alternatively powered vehicle. Hybrid electric vehicles are energy efficient cars or trucks that run on
Rating:Essay Length: 1,857 Words / 8 PagesSubmitted: March 26, 2010 -
Hybrid Shit
Arnaldo Rodriguez April 21, 2009 Period 7 Ms. Gayol Electric Cars пїј In numerous cities across the country, the personal automobile is the single greatest polluter, as emissions from million of vehicles on the road add up. Car pollution is one of the biggest polluters the solution is to have much more efficient vehicles that produce fewer emissions with every mile. So what would be the best thing for cars to run off of in
Rating:Essay Length: 805 Words / 4 PagesSubmitted: March 24, 2010 -
Hydration
Water of Hydration Lab Mr. Scott Chemistry (H) Joe 2/26/08 Purpose: The purpose of this experiment is to determine that all the water has been driven from the magnesium sulfate hydrate and the cupric sulfate hydrate by heating a sample to constant mass. Procedure: First, we place the crucible and cover on the clay triangle and heat it, leaving a small opening for any gases to escape. Next, we transfer the crucible and cover to
Rating:Essay Length: 312 Words / 2 PagesSubmitted: February 26, 2010