On Sun, 12 May 2019 21:26:55 +0100
Optimist wrote:
On Sun, 12 May 2019 09:36:12 +0000 (UTC), wrote:

[snipped]

CO2 is the important pollutant, all the others are irrelevent. If all traffic
stopped now the particulates and NOx would be gone in a day. The CO2 will
still
be around for thousands of years to come.

CO2 is a greenhouse gas, but far less potent in that respect than water vapour
- but no-one suggests
trying to reduce emissions of water vapour! Neither gas is a pollutant, they

I can't believe people are still rehashing this tired old excuse for not
cutting CO2 emissions.

https://skepticalscience.com/water-v...nhouse-gas.htm
https://www.newscientist.com/article...dioxide-isnt-t
he-most-important-greenhouse-gas/

are both essential for
photosynthesis without which all life would cease. Moreover, horticulturists
deliberately increase
atmospheric CO2 concentrations in greenhouses and polytunnels to boost crop
yields.

*sigh*. You might as well state that because all plants require water why not
plant them underwater. Also there are different type of photosynthesis and
when the temperature goes up the most important one stops working properly.

https://en.wikipedia.org/wiki/C3_carbon_fixation

"The C3 plants, originating during Mesozoic and Paleozoic eras, predate the C4 p
lants and still represent approximately 95% of Earth's plant biomass, including
important food crops such as rice, wheat, soybeans and barley."

"C3 plants cannot grow in very hot areas "

And just for you:

http://www.passmyexams.co.uk/GCSE/bi...rate-of-photos
ynthesis.html