This artist's concept shows the newfound alien planet alpha centauri bb, found in a three-star system just 43 light-years from earth. The life in the earth was created long before, there have been many studies and earth is the only planet that supports human lives planet of life essay. Earth, the third closest planet to the sun, is also the only known planet that supports life the atmosphere contains 78% nitrogen, 21% oxygen, and 1% argon. Precipitation supports life on land with salt-free water hydrologic cycle rain and snow are part of a larger process called the hydrologic cycle, which transports water from the ocean to land and back again.
Most population experts think planet earth can support about 10 billion people, and that when our population reaches that number, it will start to decline this will likely happen by the year 2100. The right core: earth's solid inner core and liquid outer core play crucial roles in protecting life from deadly solar radiation differences in temperature and composition in the two core regions drive this powerful dynamo, emitting earth's protective electromagnetic field. When looking for life in our solar system and universe, the first place to begin the search for life is to look at life on earth earth has six properties found in all organisms and eight possible theories to how life begin.
Life of planet earth essay - 629 palabras | cram some people have therefore suggested that life came to earth from elsewhere, and that there are seeds of life floating round in the galaxy the earth in space: an essay on the origin of the solar system the origin of life on earth a well written essay example. Short essay on life article shared by life is beautiful but not always easy, it has problems, too, and the challenge lies in facing them with courage, letting the beauty of life act like a balm, which makes the pain bearable, during trying times, by providing hope. The major life supporting festure on earth is - the earth is in a safe distance from the sun it is 150 million km from the sun, making it a habitable place to live. This essay first appeared in 2003 in nasa's astrobiology magazine.
To enable life, this most special of attributes, planet earth has a number of ideal features it is unique among planets in our solar system for having water in its liquid form at the surface, in. Earth is the planet we live on it is the third planet from the sunit is the only planet known to have life on it lots of scientists think the earth formed around 45 billion years ago. Water covers 70% of earth's surface, but only 3% is fresh, and only a fraction of one percent supports all life on land climate change and growing populations are increasing the pressures on that reserve. Earth is one of the eight planets that orbit, or travel around, the sun in the solar systemit is the third planet from the sun earth travels around the sun at an average distance of about 93 million miles (150 million kilometers.
The habitable zone outside earth essay such planets follow most expectations of being a possible proxy to earth gilese667cc was declared the most earth-like planet outside of the solar system, even more similar than kepler-22b (wedemeyer-bohm gilese667cc. When imagining locations where extraterrestrial life could potentially dwell, few places inspire the imagination like one of earth's closest neighbors. How important is water to the ecological balance of the earth what role does it play and what would happen if we were to lose it or it didn't exist there are already parts of the world where we can see how life would change, if there were no water.
Oh, yeah, and one more thing: earth is known for being home to all kinds of life spacecom's clara moskowitz writes, the fact that earth hosts not just life, but intelligent life, makes it doubly unique. Support aeon 'your articles are smart, well written, and enriching essay / earth science the serengeti national park at one-half and above, life on earth. Earth is unique in the solar system as being the only planet which is able to support life in all its forms: from basic living micro-organisms to highly sophisticated and intelligent human beings.