JoeSixPack wrote:
"Mike McWilliams" wrote in message
...

Have you noticed that crop yields have also increased with the amount of
CO2 in the atmosphere.

No, I haven't. Show us some evidence for that.

Greenhouses use CO2 generators to elevate the level much higher than
atmospheric levels, and there is some benefit. The difference between 1860
levels and 2005 is about 100 ppm. That is a rise of 1 in 10,000.

Er, no. CO2 level rose from about 280 PPM to 370 PPM.

That is a rise of 90 from a baseline of 280, or an increase of over 30%

If you got
a yield increase of about 1- 10,000th, or (1% of 1%,) that would make sense.

No, that wouldn't make any sense at all.