Figure 54.3 -Upon Looking at Figure 54.3 Regarding Tilman's Experiments, What Can

Figure 54.3
-Upon looking at Figure 54.3 regarding Tilman's experiments, what can you conclude about the data?

A) As species richness increases, plant biomass increases.
B) As species richness changes, plant biomass remains consistent.
C) As species richness decreases, plant biomass increases.
D) As species richness increases, plant biomass increases and then levels off.