for example... when piece of paper is burnt. eventually it is absorbed in soil and come up in the form of tree>>wood>>paper.

I agree with you.

While most physical laws are time reversible, it is well known that there are

irreversible phenomena. This area proved fertile for many discussions, Boltzmann

was a pioneer.(with ideas of entropy and the second law of thermodynamics)

this brought ua to the next conclusion... since all processes on earth are reversible then entropy of earth is constant. it is not true that universal entropy is constantly increasing.

ypur views pls

Not so, where do you get this conclusion? A diver does not leave the water and go back on the diving board.

A closed system will have increasing entropy till it reaches a maximum, but most systems are not closed. ie. the earth recieves energy from the sun, and so on.

http://www.indiana.edu/~geol105/images/gaia_chapter_4/milankovitch.htm

yes pls... according to milankovitch cycle earth tilt, precession is cyclic. even polar switch has happened in the past. that means there are times in the past when natural phenomenon have reversed

No

I have tried one experiment

I thought that motion should be created by pushing needle of old type of motor speedometer but motion could not be created while theoretically it should be if moving vehicle is showing speed then shifting needle of speedometer should move vehicle so conclusion is that this is irreversible phenomenon

pardon my little understanding.. can you pls share any othwe example

An irreversible phenomena is one that cannot happen if you reverse the time.

If you have a container and keep the gas in just half of it, you let go, the gas will fill all the container.

On the other hand, do not expect the gas in all the container to go back into just half of it.

During an irreversible event, entropy increases.