Look at the Leaves

How old is this tree?
Where does a seed come from?
 I found a pine tree growing in the rain gutter of my house..
Way high; second floor roof.
A) The seed was dropped from a tree.
Where did the tree come from?
A) The trees sprout from the seeds in the earth.
And so.. Where do the seeds come from?
A) They come from the trees.
And yet .. The trees come from the seeds.  That makes no sense.
A) Neither does perpetual motion; yet..
A) Look at the moon.

At least; I know where the leaves come from.