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Birds store most of their waste nitrogen as uric acid.
Q3: Peristalsis refers to waves of muscular contractions.
Q4: Which structure do cells that make up
Q12: The vermiform appendix projects from the ileum.
Q14: During inhalation, air moves from the pharynx
Q30: The stomach lining is protected by<br>A) alkaline
Q30: Figure 51-2 Use the figure to answer
Q43: Outside the zona pellucida is a layer
Q76: The nephridial organs of flatworms are called
Q82: Because hormones are present in small amounts,
Q106: Trypsin and chymotrypsin are secreted by the