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Thursday, March 21, 2019

What are the "C3" plants that benefit from more CO2 in the air ?

Note: 
This is a real science article,
( along with the next article ).

That means it's filled with facts, 
but no scary climate predictions.

And no always wrong, wild guess
predictions, of a coming climate 
change catastrophe, which seems
mandatory for any climate change 
junk science article the mainstream 
media will use.

Robert Francis O'Rourke will 
not be here to wave his arms
wildly, as usual, and warn us 
about the "existential threat" 
of climate change !

Global "climate authority"
Alexandria Occasionally Coherent,
will not be here to lecture 
us on the Green New Deal !

There will be 
no scary claims here
that life on Earth will end, 
as we know it, 
in twelve years.

Because everybody, 
who is anybody,
knows life on Earth
will end in eleven years,
not twelve years !
( heh heh )

I guess I should have written
that this is a real science article,
starting with some socialist bashing
for (my) entertainment !


The more CO2 
there is in the air, 
the bigger and better 
plants will grow,
using less water too !

Results from over 3,500 
separate real science
experiments, conducted on 
over 500 plant species, 
reveal nearly all plants
experience increases 
in dry weight ( biomass ) 
in response to atmospheric 
CO2 enrichment.

Increasing the CO2 level in the air
stimulates plant productivity 
( dry matter content, or biomass ). 

Growth enhancement occurs 
because carbon dioxide 
is the primary raw material 
utilized by plants, to produce 
the organic matter, out of which 
they construct their tissues. 

That's why smart 
greenhouse owners
buy and use CO2 
enrichment systems
inside their greenhouses !





The plants that benefit most 
from extra CO2 in the air
are called "C3 plants".

C3 carbon fixation 
is one of three 
metabolic pathways 
for carbon fixation 
in photosynthesis, 
along with C4 and CAM. 

In C3 plants, carbon dioxide 
is drawn directly from the air.

C3 plants include rice and barley.

Plants that survive on C3 fixation, 
( "C3 plants" ), tend to thrive 
in areas where sunlight intensity 
is moderate, temperatures 
are moderate, carbon dioxide 
concentrations are 
at least 200 ppm, or higher, 
and groundwater is plentiful. 

C3 plants grow in the climate
that farmers and other humans 
prefer to live in.




C3 plants, originating during 
Mesozoic and Paleozoic eras, 
before the C4 plants,
represent approximately 95%
of Earth's plant biomass. 

C3 plants lose 97% of the water 
taken up through their roots 
to transpiration through 
their stomata
( think of humans 
sweating from their pores ).

C3 plants cannot grow 
in very hot areas.

In dry areas, C3 plants 
shut their stomata 
to reduce water loss, 
but this stops CO2 
from entering the leaves, 
and therefore reduces 
the concentration 
of CO2 in the leaves. 

The more CO2 in the air,
the quicker a plant 
can absorb the CO2 
it needs, and then close 
the stomata to prevent 
further water loss
through transpiration.




C4 and CAM plants 
have adaptations 
that allow them to survive 
in hot and dry areas.

C4 and CAM plants 
grow in climates
that farmers and
other humans 
don't want to live in !