Can anyone please help me! i dont know how to do this:

True the answer is true

The fact that the earth goes through natural cycles for example the ice age some scientists belive that it is just another cycle

They contributed many things, but here are some examples:

1) democracy - democracy as a political system was first implemented in ancient athens
2) some advances in mathematics - such as the pythagoras' law
3) the script - the roman script was adopted from ancient greek.