Biology Quiz
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ECOSYSTEMS: INTERACTIONS, ENERGY, AND DYNAMICS
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Claim: Group living increases survival because individuals can take turns acting as sentinels, warning others of predators.
Evidence:
- Study 1 (observation): When a sentinel was present, groups spent 50 minutes/hour feeding; when no sentinel was present, groups spent 35 minutes/hour feeding.
- Study 2 (experiment): Researchers played recorded alarm calls to groups without any predator present. After alarm calls, feeding time decreased and hiding time increased.
Which option best evaluates whether the evidence supports the claim about survival benefits of sentinel behavior?
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