Examlex
The production possibility frontier has a negative slope because _____.
Mechanical Isolation
A form of reproductive isolation where differences in the size and shape of reproductive organs prevent mating between species.
Mating Structures
Physical or behavioral adaptations that facilitate reproduction, which may include specific body parts or complex courtship behaviors.
Sexual Isolation
A form of reproductive isolation where differences in mating rituals, timings, or preferences prevent members of different species or populations from interbreeding.
Behavioral Isolation
A form of reproductive isolation where two populations do not mate because of differences in courtship rituals or other behaviors.
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