Examlex
Which of the following is NOT a reason social returns might be greater than private returns?
Operational Sex Ratio
The ratio of sexually competing males that are ready to mate to fecund females at any given time in a population.
Sexual Selection
A mode of natural selection where certain traits increase an individual's chances of reproducing by attracting mates or prevailing over rivals.
Parental Care
The behaviors and actions of parents directed toward supporting the survival, growth, and development of their offspring.
Predator-Rich Streams
Water bodies that contain a high density of predator species, affecting the balance and dynamics of aquatic ecosystems.
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