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A(n) ____ allows two rival males to assess one another's strengths without engaging in a potentially damaging fight.
Q4: The action of bacteria on ammonia in
Q17: _ have the most efficient respiratory system
Q19: The relationship between the sea anemone and
Q20: Which statement is NOT generally characteristic of
Q36: Animal skins,livestock,tobacco,teeth and rocks have historically served
Q47: A dance that recruits other bees into
Q58: Which of the following is an example
Q65: Chemical digestion of food is completed here.<br>A)Stomach<br>B)Gallbladder<br>C)Small
Q80: During menopause,_. <br>A) estrogen levels rise<br>B) menstruation
Q86: _ describes waves of contraction and relaxation