| Papers [1-15] of 100 :: [Page 1 of 7] | | Go to page : 1 2 3 4 5 6 7 —> | Search results on "LIFE PLANET EARTH": |
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Life on Planet Earth, 2005.
An examination of the development of life on Earth.
2,250 words (approx. 9.0 pages), 15 sources, $ 89.95
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Abstract
This paper is an examination of life on Earth from its humble beginnings on through the remarkably fecund Cambrian period. Among other things, this paper looks at the Earth's own unlikely beginning, the slow development of life on its surface and the perils it faces. Of special interest, the paper devotes a great deal of time to possible explanations for the recrudescence that took place during the Cambrain period.
From the Paper
"The origins of life on earth have fascinated and engrossed scientists for generations. This fascination, of course, should not be surprising: as human beings, we have an instinctive need to know our past - perhaps because knowing our past gives our lives meaning and context and informs our present and future. Whatever the case may be, the study of life's origins has long been one of the chief pursuits of the scientific community. With this in mind, the following chapter will examine the history of life on planet Earth from the earliest days of our planet, on through the period in which the first simple, multi-cellular organisms emerged, to the "Cambrian Explosion" and the marvelous profusion of life that it created. "
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The Planet Earth, 2007.
A look at Earth as compared to the other planets in our solar system.
1,957 words (approx. 7.8 pages), 4 sources, MLA, $ 62.95
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Abstract
This paper examines why Earth is the only planet in our solar system capable of sustaining life and how it is the only planet that has plentiful liquid water and an atmosphere that can protect the planet from the harmful ultra-violet rays of the Sun. The paper attempts to determine what makes Earth so special by using comparative planetology to understand what makes Earth a habitat for life and what makes it so different from the other planets in our solar system.
Outline:
Terrestrial Planets
Jovian Planets
Conclusion
From the Paper
"If we were to look at Earth as a starting point to compare the other eight planets in our solar system, the first thing we notice from space is the magnificent blue color and swirls of clouds. This is an inviting sight and is the first hint at why life is found on our planet. Earth has many features that the other planets do not have. Earth has many features that make it unique. Earth is made of rock and metal. It is one of the four terrestrial planets and has the largest Moon in the solar system. Earth has abundant volcanic activity because of its size in comparison to the other terrestrial planets. With the abundance of water and oxygen, Earth's atmosphere stays in balance and is able to continue supporting life. The liquid oceans help to remove carbon dioxide from the atmosphere and the presence of a stratosphere helps protect the surface from the deadly ultra-violet rays of the Sun. Another unique feature of Earth is plate tectonics. Plate tectonics acts as giant conveyor belt that moves the mantle of Earth around, which constantly changes the look of our planet. Although Earth's interior needs much more exploration, scientists can tell about the composition of the deepest regions of Earth by using seismic waves following an earthquake. By reading this seismic data carefully, scientists get a better understanding of interior Earth."
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Complex Life on Earth: Cosmic Accident or Logic of Evolution?, 2001.
An analysis of the book "Rare Earth: Why Complex Life is Uncommon in the Universe."
1,655 words (approx. 6.6 pages), 5 sources, APA, $ 53.95
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Abstract
This paper takes a critical look at the book "Rare Earth: Why Complex Life is Uncommon in the Universe", by Peter Ward and Donald Brownlee. It discusses their theories of the beginning of life on Earth and additional theories to life on other planets. It challenges their research and data and offers other explanations and theories.
From the Paper
"Was the occurrence of complex life on the planet Earth an isolated event or simply the next logical step in evolution? Ward and Brownlee seem to believe complex life is unique to our home world or at least extremely scarce in the Universe.1 In addition to the factors in their Rare Earth equation, mentioned in their book are some specific factors peculiar to Earth that may have affected the development of complex life. Beginning with the planet Mars, W&B argue that the fossil record shows that the cooling Earth developed bacterial life as soon as conditions permitted. They suggest that this may be because the bacteria first developed on Mars, which cooled earlier, and that perhaps Earth was then seeded with these bacteria carried by meteorites reaching our planet after having been ejected from Mars by asteroid impacts. The low gravity of Mars makes this more likely, and it is estimated that ten percent of meteors ejected from Mars may impact Earth. A system lacking a Mars-like planetary companion might have been slower to develop bacterial life."
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From The Big Bang To Life On Earth, 2000.
This paper examines the history of the Big Bang theory and how life may have been created on Earth.
2,545 words (approx. 10.2 pages), 5 sources, $ 77.95
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Abstract
This paper examines the Big Bang theory, and how the planet Earth is thought to have come about. The author discusses how if life on Earth was created via the Big Bang, could not humans expect to find intelligent life elsewhere in the universe, created in the same manner? The paper looks at whether humans have the technology to discover possible extraterrestrial life.
From the Paper
"Should we as humans expect to find intelligent life elsewhere in the universe? There are many reasons for and against this concept, but first we should trace just how our terrestrial life started. The beginning of time and the universe began with the Big Bang. This was an explosion that started the expansion of the universe. In the most basic sense, the standard model is simply the idea that every bit of the matter and energy in the universe was once compressed to an unimaginable density. In the big bang, the material exploded outward into the formation of matter that we see today."
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Mars: Not Exactly Home, but Better Than Venus, 2008.
This paper looks at different planets and focuses on Mars as the most preferable option for sustaining human life after planet earth.
1,696 words (approx. 6.8 pages), 7 sources, MLA, $ 54.95
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Abstract
In this article, the writer notes that the solar system is a unique combination of many different types of planets, which has many different things that it can offer to humans. However, the the writer points out, planet Earth offers the most beneficial climate and diversity for human life. The writer notes that many of the other planets are entirely devoid of life. The writer discusses that despite the fact that there are eight planets in our solar system, only Mars (other than Earth) seems to be capable of containing human life at all. The writer maintains that Mars has many of the requisites that are needed to sustain human life, such as the possibility of water, small amounts of oxygen, and a possibility of life. The writer concludes that if humans were to ever colonize another planet in the solar system, Mars would be the most intelligent choice.
From the Paper
"Apart from the cold at its poles (which is far more extreme than Earth's), Mercury shares very little in common with Earth. It would be very difficult for humans to inhabit Mercury. The temperature extremes, the lack of water, and the lack of a protective atmosphere would quickly decimate human life attempting to live there. Current space craft could succeed in landing humans on Mercury, but it is unlikely that there would be a way to maintain proper oxygen levels for survival.
"Venus is another planet that is very inhospitable. Yet, for several reasons, it is known as the sister planet to Earth: Venus is similar to Earth's size (95% its diameter, 80% of its mass. Both planets do not have many craters, which points to young surfaces."
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"Trashing the Planet" ( Dixie Lee Ray ) & "Earth in the Balance" ( Al Gore ), 1993.
Compares conflicting books on environmental policy. Looking at economy, politics, technology and regulation.
1,350 words (approx. 5.4 pages), 2 sources, $ 47.95
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From the Paper
" The environment has long dominated man and his way of living. With the Industrial Revolution, however, and the explosion of technology that followed, humans attempted to control nature. The results have been miraculous in many cases. We now have a standard of living unimaginable one hundred years ago. But there has been a price to pay on the environment. In fact, some will argue that the price has been way too high and it is time to revert back to the "pioneer days" in order to save the planet Earth.
The purpose of this paper will be to review and discuss two books representing very different points of view in relation to the environment. The titles are: Trashing the Planet by Dr. Dixie Lee Ray (1990) and Earth in the Balance by Vice President Al Gore (1993). A description of each book and its issues will.."
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Life on Mars, 2002.
A discussion of whether there is life on the planet Mars.
942 words (approx. 3.8 pages), 4 sources, MLA, $ 33.95
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Abstract
This paper looks at literary and scientific documentation to assess whether the possibility exists that there is both life and an existing civilization in Mars and whether Mars is able to support human (or at least similar to the elements needed to support human living) life.
Outline
Introduction
Graham Hancock?s ?The Mars Mystery?
Summary of Scientific Speculations
List of Similarities between Mars and Earth
Evidence Supporting Life on Mars
Physical Structure and Composition of Mars
Chemical, Biological and Atmospheric Composition of Mars
Life is Possible on Mars
Civilization Existed on Mars
Space Missions and Probes
Space Mission/Programs Funded by Various Nations
Disqualification of Claims of Civilization on Mars
Conclusion
From the Paper
"These space probes and explorations about Mars brought about numerous information and even pictures of the planet?s surface. However, it is difficult to obtain quality shots of the planet?s surface because of its distance from the Earth, and accuracy and precision was sacrificed when information brought by these probes came into existence and knowledge of scientists and astronomers. One speculation that resulted from these studies and explorations is that aside from the possibility that Mars is capable of cultivating human life, there has been evidence supporting some scientists? claim that there existed a form of civilization in Mars."
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Ecological Footprints: Sustaining Our Earth, 2002.
Explains the effects ecological footprints have on sustaining our country and the planet Earth.
2,406 words (approx. 9.6 pages), 6 sources, $ 73.95
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Abstract
This paper discusses how ecological footprints, effective ecological tools used to help maintain our world, impose many questions in sustaining the earth?s life. Charts are included with the paper.
Defining Our Ecological Footprint
Dependency on Nature
Carrying Capacity of Cities and Earth
Comparison between Countries
Natural Capita: Effects on the Earth
Impact of the World Economies
Solutions
From the Paper
"The world economy has a great impact on the ecological footprints of the world. Every country wants to obtain economic growth to produce more money. But in doing this, they have to deplete their natural capital, which in turn, is not helping in sustaining this world. As William Rees states, ?there is simply not enough on the planet to sustain present international development trends using prevailing technologies? (Westra and Werhane ed. 1998, 115). So something drastic has to be done. As the ecological footprints of humans are already too large for the earth to handle, how can we accommodate the rising materials and rising in population, while trying to sustain the earth. Most analysts agree that it can happen in two ways: through a reduction in the standard of living or through the increase in material and energy efficiency (Westra and Werhane ed. 1998, 115). These two issues also apply problems, through cultural, economic, and social values. Especially in the more developed countries. To lower the standard of living would be outright rejected in the more developed countries such as Canada and the U. S. So indeed, most people agree that ?global sustainability is achievable only through large increases in the consumption of goods and services in both poorer and richer countries? (Westra and Werhane ed. 1998, 115). But still a problem arises. There will still be inequity in the growth of the more and less developed countries. It seems the richer get richer and the poorer get poorer. A consensus seems to be emerging though. They say that the needed consumption will work if there is a reduction in the material energy costs of goods and services. "
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Life in the Universe, 2007.
An exploration of the possibility of life on other planets.
1,772 words (approx. 7.1 pages), 5 sources, MLA, $ 57.95
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Abstract
This paper argues that in an ever-expanding galaxy, humans cannot be the only intelligent life forms and how somewhere, in some universe exists a form of life equal or superior to, intellectual capability and performance of humans. It looks at the attempts that have been made in the past such as the Search for Extra-Terrestrial Intelligence government program and how such methods such as interstellar communication should leave us open for communication with aliens.
From the Paper
"The Search for Extra-Terrestrial Intelligence or SETI was the most famous government funded program initiated to find intelligence life. This program was designed to communicate with aliens in far reaches of the galaxy by using radio signals that travel at the speed of light. The radio signals that were sent out included a wealth of information about man kind and the earth. It would send information about us humans; like the location of our home world, population of the earth, and little useful things for anyone that is listening could hear. SETI exists to this day and is still sending out signals. It is also listening with some of this world's largest satellite dishes. So far, they have discovered no evidence of an advanced civilization. "
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Earth and Mars, 2002.
A comparison of the two planets discussing whether Earth can become extinct the way Mars did.
920 words (approx. 3.7 pages), 6 sources, APA, $ 32.95
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Abstract
The paper details the similarities between Earth and Mars explaining that Mars once had its own water cycle. The paper explains what an asteroid is and asserts that asteroids probably destroyed Mars. It speculates whether an asteroid can destroy Earth and discusses ways to prevent this from happening.
From the Paper
"A billion or so years ago, a frozen lake covered the plains that were alive. Most of the other volcanoes had stopped spewing gases, the temperature and atmospheric pressure on Mars were so low that ice from the lake surface sublimated. These formed into vapor without melting as water. The water vapor formed clouds that dropped snow onto the volcano?s slopes. The volcano?s magma chamber warmed the slopes enough to melt the bottom layers of the deep snow pack."
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Why We Can Only Live on Earth, 2005.
A look at why Earth, as far as our technology can determine, is the only planet that can sustain human life.
1,157 words (approx. 4.6 pages), 5 sources, APA, $ 39.95
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Abstract
This essay looks at why life forms on Earth can live on the Earth but cannot survive on other planets. In exploring this fact, this essay discusses scientific theories about the creation of the universe, how conditions on Earth support life, and how the conditions on other planets are hostile to it.
From the Paper
"The current scientific theory about the creation of the universe states that at one time all the matter and energy in the universe was condensed in a very small and infinitely hot mass. About 10 and 15 billion years ago, a huge explosion, termed the ?Big Bang,? took place that sent matter and energy expanding in all directions, and the universe was born. The formation of the stars (including our sun), the galaxies, and the planets are all explained by the Big Bang theory. This hypothesis about the creation of the universe was developed following the observation by an American astronomer, Edwin Hubble, in the late 1920s that distant stars and galaxies are receding from Earth in every direction?indicating that the universe was expanding."
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The Origins of Life, 2008.
Looks at the origins of life on earth and the implications for the search for extraterrestrial life.
2,010 words (approx. 8.0 pages), 9 sources, APA, $ 63.95
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Abstract
This paper explains that the search for life beyond this planet must be built on a solid understanding of how life managed to emerge on Earth. The author examines the development of extraterrestrial theories about the origins of life by beginning with an examination of previous theories of origin. The paper then presents current research and the empirical basis for current theories with implications for the search for extraterrestrial life. The author also offers some possible avenues of future research and examination, which could help refine the understanding of the origins of life in the universe.
From the Paper
"In fact, the presence of a liquid like water seems to be the only major prerequisite for the development of life. Without a liquid, the complex chemical reactions required for the emergence of life are presumed impossible. But, that's not to say that the liquid in question must be water. Many researchers are exploring the possibility of life developing in more unorthodox liquids, such as methane, ammonia, or even sulfuric acid. Life on earth may have simply developed to take advantage of the very abundant liquid water; water's presence may have only been happenstance."
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The Stone Age in the 21st Century, 2001.
This is a creative writing sample that examines what the planet Earth might look like to outsiders, hundreds of years after a meteor destroys it.
1,040 words (approx. 4.2 pages), 0 sources, $ 36.95
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Abstract
This creative writing essay presents an accounting of a scenario in which a meteor hits the planet Earth, destroying all living things. Hundreds of years after the collision, someone stumbles across what used to be a home, and tries to figure out what the artifacts left in the house were used for before the meteor crash.
From the Paper
"We arrived on planet Earth this morning and began our expedition with little hope of finding anything useful for our research. Earth has been a dead planet for hundreds of years and we know that there is no life form existing on it. As we begin to disembark however our scout conveyed that he found what appears to be a dwelling form the structure people. The structure people are those who lived here on Earth hundreds of years ago. We so named them the structure people because of the structures that they used to live in. The structures are long gone because the elements on Earth have destroyed them but the scout found a location of a former structure in which some things have been preserved."
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The Planets, 2002.
A brief overview of the planets of Venus, Saturn and Jupiter.
3,221 words (approx. 12.9 pages), 30 sources, MLA, $ 92.95
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Abstract
This paper examines three planets namely Venus, Saturn and Jupiter and provides some factual information about them and their motion relative to earth. For each planet in turn, it provides information on the history of its name, examines its atmosphere and composition, missions to the particular planet as well as providing a comparison of the chemical and physical makeup of the planets with Earth.
From the Paper
"It takes Saturn 29.5 years to complete one revolution around the Sun. As it circles the Sun, the angle of the Saturn's rings relative to the Sun varies by 27.3 degrees. During this motion a very peculiar phenomenon is observed. Twice during the 29.5 years, the rings are edge-on to the Sun. Since, as seen from Saturn, the Earth appears not more then 6 degrees from the Sun, it too crosses the ring plane at around the same time. Since Saturn's rings are so thin, when they are edge-on to the Earth, they appear to disappear when viewed with a small telescope."
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Earth Odyssey: A Review, 2001.
This is a book review of Mark Hertsgaard's book, "Earth Odyssey: Around the Earth in Search of our Environmental Future."
1,120 words (approx. 4.5 pages), 1 source, MLA, $ 38.95
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Abstract
This paper is a discussion and analysis of the environmental issues that are discussed in Mark Hersgaard's book, "Earth Odyssey." Some of the topics examined are nuclear technology, humanity's addiction to the automobile, the health of the planet and the affects of unbounded capitalism. The author also discusses poverty, and some of the reasons for the disparities between the richer and poorer countries and their populations. The author also poses several solutions to some of these problems.
From the Paper
"But Hertsgaard also brings up other ways we are destroying our environment, that beyond our own selves. According to Hertsgaard, ?the automobile may well be the ultimate symbol of the modern environmental crisis? (p.90) The world?s fleet of cars contributes ? between 20 and 25 percent of current greenhouse gas emissions; only electric power plants, with 25 percent, and deforestation, with 25 percent, are as damaging.? (p.94) And then there?s health effects: ?A study released by Harvard University researchers in 1995 found that 30,000 Americans die every year from respiratory illnesses related to car exhaust, while another 12,000 people die prematurely because of such exhaust? (p.95) Clearly, this is a point in his argument he feels especially strong about. And more importantly, it?s one we as a population can control."
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