Evolution is unrolling or unfolding of nature that brings about an orderly change from one form or condition to another resulting in descendants becoming different from ancestors. Evolution is rather a law of nature.
Evolutionary biology is the study of the history of the development of newer forms of life from the pre-existing ones in various periods
of time on earth.
Origin of the universe
Universe or cosmos is the whole existing space and matter which is differentiated into several galaxies with each galaxy having several stars and cloud of gas and dust.
Most accepted theory to explain the origin of the universe is the Big Bang theory which was proposed by Abbe Lemaitre in 1931. According to this theory, the universe has an explosive beginning. The universeexpanded and hence temperature came down.
Origin of the solar system
According to Nebular Hypothesis of Kent, our solar system was probably created about 4.5 to 5 billion years ago when gaseous cloud called solar nebula was formed.
Our earth was supposed to have been formed about 4.5 billion years back. There was on the atmosphere on the early earth.
Advertise on gneet.com
Origin of life ( biopoiesis)
As far as we know life occurs only on earth though there is the possibility of its presence elsewhere as well. Methane which has helped develop life on earth occurs on Jupiter, Saturn and interstellar space. Water has been detected on our moon, on mars.
Theory of special creation.
Life was created by God.
The genesis of Bible has proposed that God created the world in six days .
Day 1: Heaven and earth
Day 2: Sky and water
Day 3: Land and land plants
Day 4: Sun, moon and stars
Day 5: Birds and fishes
Day 6: Land animals and human
The first man was Adam. He was created from clay. The first woman was Eve who developed from 12th rib of Adam.
Hindu mythology – Hindu believed that the world was created by Brahma. The humans were formed from his head, birds from the chest, goats from mouth and plants from hair. The first man was Manu and the first woman was Shradha.
Theory of eternity
Different living beings, plants, stars etc. existed as such from the beginning and would continue.