What happens at the end of the chain in figure 9.3? ; a) 2 electrons combine with a proton and a molecule of nad���.; b) 2 electrons combine with a molecule of oxygen and two hydrogen atoms.; c) 4 electrons combine with a molecule of oxygen and 4 protons.; d) 4 electrons combine with four hydrogen and two oxygen atoms.; e) 1 electron combines with a molecule of oxygen and a hydrogen atom.

Ali hypothesized that increasing fertilizer would increase plant growth. four groups of thirty similar plants were given 0 to 15 ml of fertilizer, as shown in the graph. the change in plant height for each group over a two-week period was averaged and recorded. plant group fertilizer added (ml) avg. growth (cm) a 0 4 b 5 6 c 10 8 d 15 3 what is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.