I like your poem, but don't forget to document/credit your images. It's easy to do. Make sure you are using free images if they are not your own. (If they are your own, it's a good idea to say that too.)
Your image credit will look something like this:
Image from [ site here ] ( url here )
(Remove the spaces between the elements to make the code work.)
RE: The A-B-C of Life