The answer is: <span>Ecological Succession
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The correct answer is: [D]: " low-growing " .
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Sap flows when daytime temperatures rise above freezing (32 degrees Fahrenheit / 0 Celsius) and nighttime temperatures fall below freezing.
The rising temperature creates pressure in the tree generating the sap flow.
That structure is called your DNA containing the chemical bases adenine, guanine, cytosine, and thymine.