From the Poetic Asides blog:
For today’s prompt, write a nature poem. For many poets, the first thing that may pop to mind includes birds, trees, waterfalls, rivers, and such. But there’s also human nature, nature vs. nurture, and other things natural, including natural selection and being a “natural” at something. Let your nature take it where it will today.

All Natural

Is a bird’s nest natural?
How about termite mounds as tall as a man?
Are high-rise apartments any less natural?

No one disputes that whole grain wheat is natural
but what about bread baked from its flour
and if the flour is bleached from exposure
to the sun and air or other whitening agents
deduced by observation and experiment,
manipulated from natural material
to make a foot long hot dog bun?

Unless you consider humanity unnatural,
it may not be healthy,
it may not be wise,
but my chilidog
is perfectly natural.