The corect answer is: B. Intercalated disks.
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Answer:
Open populations occur when the total population is dynamic, with new members leaving and being added over time. ... Closed populations occur when the members of population are fixed and no new members are added or lost from the group (except through birth and death
Explanation:
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Answer:
causality
Explanation:
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The answer is C (when they cannot interbreed) because when the new species cannot have offspring with the old species, they do not mix traits.