1. etc

2. A Single Year’s Tree Growth Season by Season
Beginning of the growth year
End of the growth year
One Growing Season
Fall
Summer
Spring
No Growth in Winter

3. This end is ---- 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
tree ring of year one:
This ring precedes the one to the left
Fall:
year 2
Summer:
year 2
Spring:
year 2
Fall:
year 1
Summer:
year 1
Spring:
year 1
This end is ----
Which end of this sequence is toward the center of the tree?