Śyāmasundara: Nature can't be chance. If so many plants...
Prabhupāda: That plan is Kṛṣṇa's. That is said in the Bhagavad-gītā, mayādhyakṣeṇa prakṛtiḥ sūyate sa-carācaram: (BG 9.10) "Under My plan, under My superintendence, the nature is working. The changes of the world is going on for that reason." Hetunānena kaunteya jagad viparivartate: "All these changes are taking place on account of My supervision." So there is no question of chance. It is all planned, planned by the Supreme, daiva netreṇa, by superior arrangement.