To remain sustainable over a long period of time a forest might have to

a. remain the same over the long term
b. remain the same in the short term
c. change over the long term
d. change in the short term

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Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.