Lord Krishna is the original Personality of Godhead from whom the three creative incarnations, namely the purusa-avataras–Karanarnavasayi Vishnu, Garbhodakasayi Vishnu, and Ksirodakasayi Vishnu–expand. The whole material creation is conducted by the three purusas in successive stages under the external energy of the Lord, and thus material nature is controlled by Him. Thinking material nature to be independent is like seeking milk from the nipple like bags on the neck of a goat. The Lord is independent and desireless. He does not create the material world for His own satisfaction as we create our household affairs to fulfil our material desires. Actually, the material world is created for the illusory enjoyment of the conditioned souls, who have been against the transcendental service of the Lord since time immemorial. But the material universes are full in themselves. There is no scarcity for maintenance in the material world. Because of their poor fund of knowledge, the materialists are disturbed when there is an apparent increase of population on the earth. Whenever there is a living being on the earth, however, his subsistence is immediately arranged by the Lord. The other species of living entities, which far outnumber human society, are never disturbed for maintenance; they are never seen dying of starvation. It is an only human society that is disturbed about the food situation and, to cover up the real fact of administrative mismanagement, takes shelter in the plea that the population is excessively increasing. If there is any scarcity in the world, it is the scarcity of God-consciousness; otherwise, by the grace of the Lord, there is no scarcity of anything.
Source: A.C. Bhaktivedanta Swami Prabhupada (2014 edition), “Srimad Bhagavatam”, Third Canto, Chapter 5 – Text 5