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By growing on the trunk or branch of a tree,a lichen gains height and exposure to sunlight for photosynthesis.The tree is not harmed by the lichen but does not benefit either.The relationship between the lichen and the tree is
Q33: At any given moment what is the
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Q52: An important adaptation for terrestrial life that
Q55: Wetlands are one of the few habitats
Q67: A predictable,well-defined response due to a first
Q73: Which of the following statements about organisms
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Q93: Which of the following patterns represents a