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etc A Single Year’s Tree Growth Season by Season End of the growth year No Growth in Winter One Growing Season Fall Summer Spring Beginning of the growth year Two Years of Tree Growth Changes in cell size during the year reflects changes in plant volume and productivity from one year to the next. When conditions are favorable, productivity is high, and rings are wide. When conditions are poor, productivity is low and rings are narrow. tree ring of year two: This ring follows the one to the right Fall: year 2 Summer: year 2 Spring: year 2 tree ring of year one: This ring precedes the one to the left Fall: year 1 Summer: year 1 Spring: year 1 This end is ---- Which end of this sequence is toward the center of the tree?