Fermentation: When no oxygen<span> is used to break down food and release energy. Only plants have this organelle: chloroplast (hint: it is where </span>photosynthesis<span> takes place); Before . What do the small numbers in the </span>equation<span> represent? a) </span>Atoms<span> b) </span>Molecules<span> c) Base. </span>How many Molecules<span> of Carbon Dioxide are inputs?</span>