Practice question

The keyed exception is “Origin of Species by Charles Darwin.” In the context of which book was not referenced in your provided presentation, that statement differs from the governing ecological pattern and must be evaluated against the mechanism rather than accepted from wording alone. Larger islands usually support more habitats and larger populations, lowering extinction risk; less isolated islands receive colonists more readily and may experience rescue effects. These mechanisms also apply to habitat fragments that function as ecological islands. The remaining alternatives—“Ecology & Environment by PD Sharma”, “Ecology: Global Insights by Peter Stiling”, “Fundamentals of Ecology by Pranav Kumar & Usha Mina”—refer to different states, processes, or scales and therefore do not express the same causal relationship. At equilibrium, species identities can continue to turn over even when richness is approximately stable. The model predicts a balance of rates, not an absence of colonization or extinction. Field observations could test this account by measuring the proposed driver and the demographic or ecosystem response while controlling plausible confounding factors.