At insects from rotting cactus pads E Cactus Finches and Cactus Reproduction Finches can damage flowers by destroying stigmas Damaged stigmas cant be pollinated Thus, seed output harmed This damages cactus reproduction and limits seeds for finches Cactus Finches and Cactus Reproduction In drought years, finches do more damage to cacti (few flowers produced) Thus, biotic and abiotic factors interact Population Growth by The Small How does r vary due to organism size?