Researchers Using a Dendrograph Found That the Trunk Diameter of a Beech

question 4

Multiple Choice

Researchers using a dendrograph found that the trunk diameter of a beech tree increased and decreased slightly on a daily basis and that this variation correlated negatively with transpiration rate.Under which of the following sets of conditions should the daily changes in trunk diameter be the smallest?

• A)cool spring day,no wind,high soil moisture
• B)cool spring day,no wind,soil partially frozen
• C)hot summer day,windy,low soil moisture
• D)hot summer day,no wind,low soil moisture
• E)hot summer day,windy,high soil moisture

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