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Yes, the earth is one of a many planets, mind-boggling numbers of planets in the universe, and not each of these planets will have the same age. To create conditions relevent for life, you need atleast four basic elements, namely nitrogen, oxygen, hydrogen and carbon. Then you need a reasonable amount of time to allow the conditions for life to occur. We need quite agely planets. Planets that are too young are too volatile to allow complex life.
The strangest life we have found on earth, was made from arsenic. Using the basic information we have of our planet, all life has arisen in a carbon-based form. This may be a clue that life requires basic carbon construction. It is I admit, nothing but an educated clue. Life may arise in a different way.
IF a similar planet formed at the same time as us AND had the same conditions. i believe we would still be at least 65 million years behind them in evolution because of the mass extinctions.