11. Which of these conditions would decrease the rate of photosynthesis in a plant? A. above average precipitation

B. Changing the daylight hours from 14 hrs to 10 hrs

C. Changing the CO2 concentration from 380 ppm to 410 ppm

D. All of these choices

4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.