You are growing C3 and C4 plants in normal (21%) and low (1%) O2air, under both warm well-lit conditions and cool shady conditions.You find that, in general, the C3 plants have a photosyntheticadvantage over C4 plants in:
| | warm high light at 1% O2 and cool shade at 21% O2 only |
| | warm high light at 21% O2 and 1% O2, and cool shade at 21%O2. |
| | cool shade under 21% and 1% O2, and in warm high light at 1%O2. |
| | cool shade at 21% O2 and warm high light at 21% O2. |
