Final answer:
A biology experiment requiring replication may involve confirming previous study results on habitat modification's impact on species richness, emphasizing the importance of independent sampling to avoid biased results and affirm findings.
Step-by-step explanation:
In biology, an experiment may require replication to verify that the results are reliable and not due to random chance or other variables. A scenario where an experiment would be a replication is, for example, when a study aims to confirm the findings of a previous study on the effects of habitat modification on species richness. To reduce the impact of chance events and biased sampling, multiple independent sites must be used. These should experience the same type of modification to correctly infer the impact on biodiversity.
Additionally, the replication crisis highlights the importance of replication in maintaining scientific integrity. A high-profile retraction by a Nobel Prize-winning scientist underscores that replication is crucial, even for renowned researchers. Just as multiple observations of a phenomenon in astronomy increase confidence in its existence, so too must experiments be replicated to ensure findings are valid and not due to a fluke or overlooked variable.