Since photosynthesis occurs only in green plants and animals dervive energy via respiration, can you relate?

Question

this to the popular bumper sticker "Have you thanked a green plant today?"

Answer 1

Everybody's looking for a miracle - religious types spend their whole lives waiting for them and making up phony miracles.  And all the while plants are eating sunshine and making carbohydrate!  What more of a miracle do you need than that?  

Without green plants - no nothing.  So thanx! green living things.

Answer 2

Photosynthesis by the plant is a process for conserving the energy of the sun ( radiant energy ) in the bonds of a compound ( glucose ) while making oxygen. So the plant "fixes" CO2 and water forming glucose.  Animals consume the glucose ( or polymers made from the glucose , like starch) and by enzymatic processes in the pathways of glycolysis, and TCA eventually provide reducing equvalents in the form of NADH and FADH2 that are oxidized by the Electron Transport Chain using oxygen as the terminal electron acceptor. The ETC makes water and in three steps of the step-down process there is sufficient energy produced to synthesize our energy currency of the cell, ATP. This oxidative phosphorylation couples together respiration and energy production. It amounts to converting ( transducing ) energy from the sun to chemical energy in our cells that is used to run the many reactions requiring energy input.  We expire CO2 ( coming from TCA promarily ) and water , recycling the starting materials for photosynthesis.