A flock of one species of bird arrives on a group of sparsely populated islands. With little or no competition, different species of birds evolve from the
original species. Each species is adapted to a different available niche. This is an example of

A . divergent evolution
B . convergent evolution
C . dynamic equilibrium
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D. graduated equilibrium

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.