Alveoli are structures that are:

A. important in digestion within the stomach
B. used in the production of urine by the kidneys
C. important in respiration within the lungs
D. within the red bone marrow producing leukocytes

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Organisms are classified, or grouped into categories, based on similarities in their characteristics and/or evolutionary relationships. the study of how organisms are classified is known as

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

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