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#ecological figures

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From predator-prey interaction figure, which statements are correct?

The reported figure supports statements (i) and (iii), meaning those claims are the ones consistent with the plotted predator-prey responses. Predator-prey data are usually read by comparing timing, direction, and magnitude of changes: prey often increase before predators, predator growth follows greater food availability, and rising predation can subsequently depress prey. Valid statements must follow the axes, treatment labels, and temporal lags rather than assume that correlation alone proves causation. Statements (ii) and (iv) evidently conflict with at least one of those graphical feature

Ref: Ecology: From Individuals to Ecosystems, Begon et al., 5th Ed., Ch. 10