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If a price floor is not binding,then
Directional Selection
Outcome of natural selection in which an extreme phenotype is favored, usually in a changing environment.
Cladogram
In cladistics, a branching diagram that shows the relationship among species in regard to their shared derived characters.
Common Ancestor
An ancestral species from which two or more species evolved.
Natural Selection
The process by which organisms better adapted to their environment tend to survive and produce more offspring, a fundamental concept in evolutionary biology.
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