If a disease strikes the caterpillar and rabbit populations in the food chain shown what would happen to the owl and grass populations?

If a disease affects the caterpillar and rabbit populations, the owl population would likely decline due to a decrease in available food sources, as owls rely on both caterpillars and rabbits for sustenance. Conversely, the grass population might increase, as fewer herbivores would mean less grazing pressure, allowing more grass to grow. Consequently, the imbalance in the food chain would disrupt the ecosystem, leading to potential long-term effects on all populations involved.