In areas with light coloured trunks, the light moths predominated (with dark moths being selectively eaten by birds) and in areas with dark trunks (affected by industrial pollution) the dark moths predominated (with light moths being the prime target for predation).
(the light moths; predominated; ) (the light moths predominated (with dark moths; being selectively eaten; by birds; L:In areas with light coloured trunks) (the dark moths; predominated; ) (light moths; being; the prime target for predation)
the light moths the light moths predominated (with dark moths the dark moths light moths
predominated being selectively eaten predominated being
by birds L:In areas with light coloured trunks
the prime target for predation