Domesticated animals and plants will not be able to live without human care, and wild ones themselves produce food (animals), and plants moisture, nutrients on their own.
Very often, cultivated plants have an altered genome, the so-called polyploidy. Polyploidy leads to an increase in the size of the fruit, that is, cultivated plants differ in yield by the size and number of fruits (or those parts of the plant for which the plant is cultivated). The ancestor of an ordinary cow in order to feed a calf was enough to develop about 300 liters of milk per year. Even in the worst years of socialism, the skinny cows clogged with cattle gave no less than 2,000 liters a year. And with good feeding and proper care, milks of 10-15 thousand liters per year are quite common.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.