De-Pict-ing Biology

At the end of each biology semester, I drew a similar picture.  I wanted to put an entire curriculum worth of biology into one picture.  Or at least get as much of it as I can.  I tried to show as many main ideas as possible and to tie everything back to one main idea: Life will continue...

I made the picture better with each semester, but since I have finished teaching I thought that I would put it on here.  Maybe someone will come along and make it a bit better.