Indeed it is, tolerance has a lot of factors.
It's B it helps compare wave lengths of light
<span>gas production also meant a doubling in the rate of photosynthesis? ... By adding a number of equal volumes of normal sodium bicarbonate
solution the concentration of carbon dioxide available to the plant is
increased and the gas production measured. Prior knowledge. Sodium hydrogencarbonate is a source of carbon dioxide.</span>
Answer:
Carbon dioxide , water and water