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Question 2, Part A:

Figure 3 shows the effect of thinning Aspen in its early successional stage. Before the thinning of the aspen the morality percent of aspen and fir were both about 5%. After the thinning of the aspen the morality of aspen increased slightly to about 6%. This is not the same for the fir, which instead jumped up to almost 21%. We know the aspen is the early arriving species, and without it fir do worse. This shows a facilitation relationship between the two species