Photosynthesis; This is how the British to it (teaching, not photosynthesis).
I’m not sure why he says we don’t know how photosynthesis works.
Look at how well behaved the students are. You can tell this is not America, even without noticing that the guy talks funny.
The graph on the rate of photosynthesis is idealized. This is not the graph for all plants. This won’t work for your Alaskan Peas, for instance.
Notice the maximum value for effect on increased CO2. I wonder what ever happened to the old chap..