Final answer:
Exclusion of humans from a Chilean rocky shore would result in lower diversity because humans harvested the competitively dominant species.
Step-by-step explanation:
The exclusion of humans from a Chilean rocky shore would result in a lower diversity because humans harvested the competitively dominant species. When humans consume a predator that eats dominant mussels, the prey species, in this case, mussels, can thrive and dominate the ecosystem. Without human intervention, the balance would shift, leading to a decrease in overall diversity.