Who proposed the "Law of Limiting Factors"?

What will be the effect when very high intensity of light is supplied to a photosynthesis system?

Which of the following is an effect of herbicides?

Who proposed the Law of Limiting Factors?

The concentration of $CO_2$ in the atmosphere is $...............$ and if the concentration of $CO_2$ is increased up to $\ldots \ldots \ldots$,it can lead to an increase in the rate of $CO_2$ fixation.

$A$ plants have a higher temperature optimum than the plants adapted to $B$ climate. Here $A$ and $B$ refer to: