So from slide 2 of that link:

Note, the green life along the Nile river and the dead desert elsewhere. When co2 is greater in the atmosphere, plants need less water to thrive. When dinosaurs roamed we had 3 to 5 times current co2 and planet was nearly all green, pole-to-pole Near catastrophe when co2 declined to 180 ppm, since below 150 ppm plants, then animals die. If you promote a green healthy planet, then you should lobby for a co2-fertilized atmosphere, not a co2-starved atmosphere.

If that's the argument you open with, then as an engineer you have missed the point entirely.