<span>The number of protons plus the number of neutrons is called the mass number.</span>
It is b. If I am wrong I am sorry
Solar energy provides the reducing power within green leaves to convert CO2 and H2O into sugars. ... During illumination, leaf cells have both a source (respiration) and sink (photosynthesis) for CO2. Respiration in some species appears to be greatly stimulated by light.
