Perhaps I'm missing something, but the more CO2 in the atmosphere, the faster plants grow.
Satellite imagery has revealed that the earth is becoming greener with more abundant plant growth that correlates with the rise in CO2 levels. So how can there be too much CO2?
Most Helpful Girl
That isn’t necessarily the case. Because plant growth require optimal distribution of other factors such as sunlight, water and mineral ions to grow. When any of these are not present in sufficient amounts in the atmosphere, they act as a limiting factor and prevent plants from utilising more CO2 to yield products, and thus prevents the plants from building and repairing cells.
A specific example - recall in high school biology that chlorophyll is composed of a central magnesium ion, along with other elements such as carbon, hydrogen oxygen and to a lesser extend, nitrogen. Well, CO2 only offers two of these many elements and thus, if other elements are not present in optimal amounts, this wouldn’t lead to plant growth.
Source: bio major
Although this is simply one angle to look at it.
I'm still skeptical a causative relationship between an increasingly greener earth and the current rise in CO2 levels (assuming its even true in the first place).1
Most Helpful Guy
Because plants can only consume so much CO2. The rate of production of CO2 > rate of consumption...
The red line cycles with dips in northern summers when plants consume CO2 to grow, but peaks in northern winters because the northern hemisphere has much more land and thus more plants; in the south, not so many plants...
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