Feeding behavior with a high intake to expenditure ratio is called

 Feeding behavior with a high intake to expenditure ratio is called : Optimal Foraging
Optimal foraging is one method observation that analyze how an animal behaves when searching for food.
With this method, an animal need to spend a lot of time energy but managed to get a lot of food source during that hunt.

1.  go out into nature and commune with the divine2.  experience real solitude to truly perceive nature3.  realize that individuals are meant to learn from nature and transcend it4.  think of nature as a symbol of the divine