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- Problem # 7: Age of the tree in years Average thickness of the Average thickness of the annual rings in cm. Forest B annual rings in cm. Forest A 10 2.0 2,2 20 2.2 2.5 30 3.5 3.6 35 3.0 3.8 50 4.5 4.0 60 4.3 4.5 The thicknesses of the annual rings indicate what type of environmental situation was occuE at the time of its development. A thin ring usually indicates a rough period of development: Lack of water, forest fires, or a major insect infestation. On the other hand, a thick ring indicates just the opposite. 1. Construct a line graph of the data. 2. What is the dependent variable? 3. What is the independent variable? 4. What was the average thickness of the annual rings of 40 year old trees in Forest A? 5. Based on this data, what can you conclude about Forest A and Forest B?Analysis and interpretation 1-11Vessel identify tag 20?
