Origin and Evolution of life

Origin of life

The ability to grow and produce new forms distinguishes living organisms from non-living objects.
The origin of life on the earth is a most complicated problem for thinkers philosophers and naturalists from ancient time. Different views have been put forward concerning the origin of life by workera of different ages. Special creation of life is the oldest view. According to this theory, life was created by some supernatural power of God. This theory was out forward by a spanish priest, Father Suarez (1548-1671). According to him, the world was made in six natural days. The earth and heaven were created on the first day and sky on the second day. The ancestors of plants and animal on the third day,the moon and the stars were created on the fourth day. The birds and fishes appeared on the fifth day. Finally man was created on the sixth day and then a woman was created. Adam the first man was moulded from clay and God infused life into it.

This theory has no sound logic and scientic basic. Therefore, it is not accepted by scientists.


Evolution of life
Evolution is the process by which living things change over time and adapt to the conditions of their environment "or" the gradual development of the characteristics of plants and aninmals, over time is called evolution. It is caused by changes in the gene pool of the population, usually as a result of natural selection.

Everything in this world changes continusly through space and time change in relation to plants and animals (living organisms) are studies under (organic evolution).

The life originated on the primitive earth by chemical evolution, it was later replaced by organic evolution. Organic evolution states that the present day higher and more complex forms of organisms evolved from earlier and simpler forms. All living things have evolved through evolutionaryproces and show diversity and similarities. They evolved by small but gradual changes which have occured over millions of years.