A wildlife expert predicts that the reintroduction of the caribou into northern Minnesota would fail if the density of the timber wolf population in that region is more numerous than one wolf for every 39 square miles.

would fail if the density of the timber wolf population in that region is more numerous than

would fail provided the density of the timber wolf population in that region is more than

should fail if the timber wolf density in that region was greater than

will fail if the density of the timber wolf population in that region is greater than

will fail if the timber wolf density in that region were more numerous than