The survival rates represent the proportion of the light and dark moths that avoid being eaten by birds.
(The survival rates; represent; the proportion of the light and dark moths) (the light and dark moths; avoid; being eaten by birds) (the light and dark moths; being eaten; by birds)
The survival rates the light and dark moths the light and dark moths
represent avoid being eaten
the proportion of the light and dark moths
being eaten by birds
by birds