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[Fisherbob]

https://www.kevinwaugh.ca/dont-buy-trudeaus-carbon-tax-scam/

[Fisherbob]

https://university.upstartfarmers.com/blog/why-how-supplement-co2-indoor-farms

Co2 is not so bad after all.
https://www2.gov.bc.ca/gov/content/industry/agriculture-seafood/programs/greenhouse-carbon-tax-relief-grant

[Blood_Orange]

https://www.youtube.com/watch?v=r0IQCLQDfKw

[Fisherbob]

https://www.youtube.com/watch?v=r0IQCLQDfKw

  There are kids on here Blood. I do not think it is appropriate for you to post this on here.. your other ones where funny. But this one?

[Fisherbob]

https://wattsupwiththat.com/2019/01/21/co2-and-crops-nas-vs-science/

[Blood_Orange]

https://wattsupwiththat.com/2019/01/21/co2-and-crops-nas-vs-science/

OK Boomer

[Blood_Orange]

Not suitable for the many children that visit this message board (explicit language warning):
https://www.youtube.com/watch?v=WqaMJk_n7g4

[Fisherbob]

Not suitable for the many children that visit this message board (explicit language warning):
https://www.youtube.com/watch?v=WqaMJk_n7g4

  You would be better off “contributing” to a debate to prove what ever your point is. Should I or any boomer take offence to what you cauterized us as? Very good question. The anwser is no. It only shows who you are. Btw Blood, I have been found guilty of doing the same as you in my younger years and fully understand where you are getting your feelings from. And for your entertainment:)
https://m.youtube.com/watch?v=serV18MirGg

[Fisherbob]

https://wattsupwiththat.com/2019/01/21/co2-and-crops-nas-vs-science/

  Now, perhaps Blood, you can tell me why if co2 is so bad, why do greenhouses use it to promote growth? Question 2. Is it safe for the workers at the levels they use?  Q3. Do organic greenhouse operations use co2? Now is a good time for you to sit down, buckle up, and join the debate. after all you seem to be young and our future.
   You may want to ask how sport fishing tours are going to cope with rising taxes also.

[Blood_Orange]

There is no debate going on here [see figure 1].



You're bringing an off-topic, polarizing issue to the table and inviting people to argue with you. I come to this forum to connect with others who share my love of fishing. This conversation, held in this venue, serves only to divide.

I'll leave you with one last clip to amuse you: https://www.youtube.com/watch?v=NsLKQTh-Bqo

[RalphH]

Experimental data and modeling indicate plant growth attributed to higher atmospheric CO2 is exaggerated as other factors contribute as well and are unlikely to last as CO2 continues to rise. In the long run increments in atmospheric CO2 are expected to negatively impact plant productivity. The side effects such as increased mean temperatures and greater climate variability definitely will reduce plant productivity.

https://www.scientificamerican.com/article/ask-the-experts-does-rising-co2-benefit-plants1/

https://climate.nasa.gov/news/2436/co2-is-making-earth-greenerfor-now/

https://www.carbonbrief.org/surge-in-plant-growth-explains-slower-co2-rise-over-past-decade

https://www.nature.com/scitable/knowledge/library/effects-of-rising-atmospheric-concentrations-of-carbon-13254108/

[wildmanyeah]

Was plant production an issue during the jurassic period when co2 levels were much higher?

[Fisherbob]

https://wattsupwiththat.com/2018/09/09/empirical-evidence-shows-temperature-increases-before-co2-increase-in-all-records/

[RalphH]

you should read the wikipedia article on Dr Tim Ball.l Amongst other things when Andrew Weaver sued Ball for defamation the presiding judge's ruling stated:

... that Ball's words "lack a sufficient air of credibility to make them believable and therefore potentially defamatory" and concluded that the “article is poorly written and does not advance credible arguments in favour of Dr. Ball’s theory about the corruption of climate science. Simply put, a reasonably thoughtful and informed person who reads the article is unlikely to place any stock in Dr. Ball’s views..."

essentially the judge ruled that Ball was incapable of defaming Weaver since he (Ball) was incompetent in the topic at hand.

In another case Ball claimed he has earned the 1st PHD for climate science in Canada. Prf Dan Johnson of the University of Lethbridge challenged his credentials and Ball sued. Later in court Ball acknowledged "that his doctorate was not in climatology but rather in the broader discipline of geography" and subsequently withdrew his lawsuit.

Yet even today Ball repeats the original claim.

You know how to pick the winners Bob!

[RalphH]

Was plant production an issue during the jurassic period when co2 levels were much higher?

https://www.livescience.com/44330-jurassic-dinosaur-carbon-dioxide.html

https://skepticalscience.com/co2-higher-in-past.htm

much about the planet was considerably different 150+ million years ago.

The sun was dimmer, the atmosphere had a higher % of oxygen as well (hence the large dinosaur which wouldn't be able to move if transplanted on todays world). Plant life then was not quite the same. Ferns and ginkoes were prevalent and conifers emerged then. Deciduoustrees had not appeared.  Much of the work on CO2 and plant growth has focuses on agricultural and other crops.

I don't know there is any evidence how the big spike that occurred during the Jurassic effected plant life .