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In this provided scenario I was supposed to list these items noted below, I have identified most of them, listed below the scenario, but I would love reassurance that I did them correctly and help in identifying the final three (this including the explanation of why) THANKS SO MUCH IN ADVANCE!! Model (if applicable) Independent and dependent variables Treatment groups (if applicable) Recommended controls (positive and negative, if applicable) Extraneous factors that should be controlled or accounted for Provide an explanation as to why you identified the variables, treatments, controls, and controlled variables that you did. 1. Martin has hypothesized that the size and types of trees differ between valleys and higher elevations. He sets up a transect line in a wooded valley and randomly creates three 10 x 10-meter plots along the transect line, recording GPS coordinates for the northwest corner of each plot. He identifies and measures (diameter at breast height) every tree within the plots. He repeats this procedure in a wooded area on the ridge above the valley. This scenario's model is Martin's hypothesis that tree size and types are dependent on different geographic areas, such as between valleys compared to higher elevations. The independent variable in this scenario is the location of the trees, whether they're located on higher elevations or between the valleys. The dependent variable is the size and types of the tree measurements (diameter at breast height) within the 10 x 10-meter plots Treatment groups should be the trees with greater mass that is the purpose of Martin's study??? Recommended controls (positive and negative)??? Extraneous Factors??? Provide an explanation as to why you identified the variables, treatments, controls, and controlled variables that you did???