Thanks to

"...for fame is a weed, but repute is a slow-growing oak, and all we can do during our lives is to hop around like squirrles and plant acorns." - David Waterhouse in Neal Stephanson's Quicksilver.
Nicole King for advice on Origins & Ancestors and Evolution Basics
Jon Slack, Jim Smith and John Gurdon for advice on Developmental Basics
Diane Ebert-May for advice on Carbon Cycles
Norm Pace for advice on Carbon/Energy Cycles and Phyllogenic relationships
Chuck Robertson for pointing out redundancies