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The paired,tubular excretory structures of annelids are called
Q11: All birds undergo a periodic replacement of
Q11: The brain area that contains reflex centers
Q12: During photosynthesis,solar energy is converted to
Q20: Without considering the variation provided by crossing-over,how
Q23: Tissues that produce large amounts of secretions,such
Q24: What replaces the notochord in most vertebrates?<br>A)nothing<br>B)the
Q26: Which of the following reactions is most
Q30: The functional excretory units in the kidneys
Q62: Hydrolysis of a fat results in the
Q78: In some plants,the haploid stage is the