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¶ … Origin of Life on Earth
At present, scientists are still in search of the answer to how life originated on Earth. Until now, they are continuously studying several kinds of facts and are carrying on with their research. At the moment, there are 3 competing theories on the origin of life on Earth i.e. The Panspermia Theory, The Heterotrophic Theory and the Autotrophic Theory.
The Panspermia Theory
The Panspermia Theory was proposed by Svante Arrhenius, a Swedish chemist, in the early 20th century. He suggested that life on Earth did not begin on this planet but came from space. Panspermia is a Greek word whereby spermia means seeds and pan means everywhere. This theory supports the idea that simple life forms are capable of travelling in space can expand in any atmosphere or setting. Another feature of the theory denotes the idea that the growth and expansion of living organisms into superior forms is hereditarily determined and comes from the outer world (Harrison, 2000). However,...
If truth be told, the Panspermia Theory is just a transport theory and is unsuccessful in explaining the origin of life on Earth. However, the subject of whether life has celestial foundation remains open to this day.
The Heterotrophic Theory
The Heterotrophic Theory regarding the origin of life suggests that the heterotrophs (organism that cannot manufacture their own food and are dependent on complex organic substances for food and sustenance) were the first living things on Earth. A good number of scientists support this theory and agree that heterotrophs started life on our planet and fed on organic molecules in the oceans. Adequate evidence is available that advocates the point that a large selection of compounds were present in the early oceanic regions. It is suggested that the primitive cells used some…
References
Bailey, E.R. (2007). Concepts in Biology (12thth ed.). N.p.: McGraw Hill. Retrieved December 30, 2012, from http://books.google.com.pk/books?id=1E853Gfo7VkC&printsec=frontcover&dq=Concepts+in+Biology'+2007+Ed.2007+Edition&hl=en&sa=X&ei=zWXgUJTdHqek4gTigoCYCw&ved=0CDgQ6AEwAA
Harrison, E. (2000). Cosmology: The Science of the Universe (2ndnd ed.). New York: Cambridge University Press. Retrieved December 30, 2012, from http://books.google.com.pk/books?id=kNxeHD2cbLYC&printsec=frontcover&dq=Cosmology:+The+Science+of+the+Universe&hl=en&sa=X&ei=ImbgUN38B4aWtQbXmYBI&ved=0CDIQ6AEwAA#v=onepage&q=The%20Panspermia%20theory%20&f=false
("SETI Institute," 2007) So the future holds bright to understanding more about life on Mars. References Berger, Brian. (2005, Feb) "Exclusive: NASA Researchers Claim Evidence of Present Life on Mars" Retrieved 12 December, 2007 from: http://www.space.com/scienceastronomy/mars_life_050216.html Dasch, Pat; Treiman, Allan. (2007) "Ancient Life on Mars" Lunar and Planetary Institute. Retrieved 12 December, 2007 from: http://www.lpi.usra.edu/publications/slidesets/marslife/ Davidson, Jim. (1996, Dec) "Life on Mars: You Call This Life?" Retrieved 12 December, 2007 from http://www.houstonspacesociety.org/life.html Hamilton, Calvin. J.
The Moon is believed by many to have been part of the earth and that it was tore off as a result of an initial spin that was too great to hold the planet together. One of the prevailing theories was that involving an impact of large magnitude involving the newly formed Earth and a giant object of the size of Mars hitting Earth and blowing up material that
Their respective roles were regarded as complementary, and both were necessary for the maintenance of society" (Joy, n.d.). There is a sense of evolution in the position of the Jewish woman in the sense that in time they came to be given certain rights to be part of the society and not only as part of the family environment. However, even so "as the roles of women came to be
Life After Death Introduction classical point of departure in defining Death seems to be Life itself. Death is perceived either as a cessation of Life - or as a "transit area," on the way to a continuation of Life by other means. While the former presents a disjunction, the latter is a continuum, Death being nothing but a corridor into another plane of existence (the hereafter). A logically more rigorous approach
This is followed up by the information that life comes to earth and it occurs through means of a process of development or through means of seeding from another planet or some other element of source. Then the rocks from Earth are considered to blown out again by means of asteroids and those rocks reach Mars and at the same time, life is being destroyed here by the process
Origin of Ancient Nepal Neolithic tools found in the Kathmandu Valley indicate that people were living in the Himalayan region in the distant past, although their culture and artifacts are only slowly being explored. Written references to this region appeared only by the first millennium B.C. During that period, political or social groupings in Nepal became known in north India. The Mahabharata and other legendary Indian histories mention the Kiratas (Roberts