Over the pаst decаdes (stаrting with the industrial revоlutiоn) we have experienced a sharp increase in CO2 cоncentrations in the air. Answer BOTH parts A and B of the question below. A. Assuming this continues as predicted but there are no other changes (e.g. temperature and precipitation do not change), plants with which photosynthetic pathway (C3, C4, or CAM) will benefit the most (or suffer the least)? Why? Explain the mechanisms in as much detail as you can. B. What if temperature also increases? Again, explain the mechanisms in as much detail as you can.