I know that there has been tiny, single cell organisms found in extreme climates. Does that mean that we could have

I know that there has been tiny, single cell organisms found in extreme climates. Does that mean that we could have arrived on earth on an asteriod and then slowly evolved to what we are today?

Posted on March 12, 2013 by in Question. Comments Off on I know that there has been tiny, single cell organisms found in extreme climates. Does that mean that we could have