6. Glucose exists in a straight-chain and a cyclic form. In an aqueous solution, glucose may be found in O the cyclic form only

both forms, with the cyclic form predominating

the straight-chain form only

both forms, with the straight-chain form predominating

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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