Origin of life on the earth, Science

Origin of life  on the earth:

Man has always wondered  how he came into existence, who created him, and why he was created. Curiosity in this connection has been so strong that every ancient thinker, philosopher or "prophet",  has tried  to give some answer to this question and suggest some mechanism for the creation of  life. According to an ancient Greek idea, life was transferred from "cosmozoa" (life of outer space) to different planets in small units called "spores". These spores had a  thick impenetrable covering which prevented  loss of water and other necessary components. It was assumed that under favourable conditions of  temperature and moisture, thesc spores gave birth  to the initial living organisms on the, as yet uninhabited,  plancts. This idea presumes a universal and eternal store house of  spores of  life, and thus indeed avoids answering the question as to how life anywhere originated  in the first place. The Greeks, or anyone else at that time, of course, did not know that  the travelling spores would encounter destructive radiations like the ultraviolet and gamma rays in space. In addition to  this, various other theories have been put forward from time to time about the origin of  life. Some of  them were mere speculations, whereas others have some scientific basis. 

Posted Date: 9/28/2012 3:02:25 AM | Location : United States







Related Discussions:- Origin of life on the earth, Assignment Help, Ask Question on Origin of life on the earth, Get Answer, Expert's Help, Origin of life on the earth Discussions

Write discussion on Origin of life on the earth
Your posts are moderated
Related Questions
Please complete this assignment in Microsoft Word and turn it in as an attachment. Show all work to receive full credit. 1. Given e sw = 57mb and r = 0.5, find T LCL . 2

A cloud in a bottle You can make a cloud form in a bottle. Get a large glass bottle and fit with a rubber stopper carrying a 10-cm length of glass tubing. Place about 2.5 cm of

To study a hailstone When it hails, collect some of the hailstones. Cut them in half and view how the ice of the hailstone has been built up in layers. If you live in a region

1.     Describe the properties of water that make if invaluable to life as we know it. 2.     Explain why the versatility of carbon is essential to life. 3.     Describe the

Water pressure changes with depth Use the funnel and manometer which you made in the last experiment. Fill a tall glass jar or pail with water. Calculate the pressure just belo

Explain the Duodenum The first part of the small intestine is called the diodenum. It is about 10 inches in length. At the mid-point of the duodenum, there is a common opening

Define age related changes in Respiratory system During ageing, alveoli (present in the lungs) become flatter and shallower, alveolar ducts enlarge, walls become thinner, conta

Explain the Igneous rocks form? Igneous rocks form from the crystallization of magma. There are two main kinds of igneous rocks: intrusive and extrusive Molten rock within t


A weather house Changes in the amount of water vapour are in the atmosphere can be indicated by variation in tension in a few strands of human hair or by using the hygroscopic