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A colourful male guppy courting a female guppy: What are the influences of mate selection by female
Male pumpkinseed sunfish, Lepomis gibbosus, build their nests in the shallows of lakes and ponds. Th
The male reproductive system, sagittal section showing the organs of the system and their relation t
Male and female philopatry.
Durkheim believed that modern societies produce feelings of isolation, much of which come from the ...
The development of the internal ducts of the male and female reproductive systems from the Wolffian ...