As the co2 level increases up to 600 µmol mol-1, how does ragweed pollen production change?

As the co2 level increases up to 600 µmol mol-1, ragweed pollen production will result in changes in increase.increased CO2 stimulates ragweed pollen production several times more than it stimulates overall growth, and the pollen produced may be more allergenic

Ithink its called the coefficent.

Do not include the unexpected results