Ok when the earth formed about 4 billion years ago the universe was allready 9 to 10 billion years old. there were millions of astroid hits and comet hits and some protoplant hits because of gravity.
Now some of these comets and astroids and protoplanets were made up of differant compounds, and most elements heavier then iron must form only in the deep presures of a supernova billions of mega tons per sqare inch. this makes newer hevier elements. those crashed into the new proto earth and after a while the compounds through electromagnetic radiation and UV interferiance has created a single DNA strand through molecular bonding.
sulfer,sodium,carbon,magniesum....ect.ect.... now after while that strand of dna will self replicate, and through UV interferance gets a broken spot in its sequencer and mutates, and when the program is set to run for 3/12 billion years viariety is the result, from the common house cat to humans, depending on conditions, so if life is out there it may be very differant and cannabis may be a terestriall thing, they might have something just as nice from where they live but odds are its not cannabis from Tau Seti!
:rasta: :hippy:

But what would be really interesting is what if we are the result of an alien civilization that wants to colonize the universe with its dna, so they could come back and harvest the end product......... WHAT IF WE WERE THEIR CANNABIS!!!!!!!!!!!! AHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!