Animals live by eating the energy produced by plants (herbivores), or live by eating animals that eat plants (carnivores) Let's take the human being (a polyhagous animal) as an example and ponder upon it.
(Animals; live; ) (animals; eat; plants) ('s; ponder; upon it) (the energy; produced; by plants) (Animals; live; ) (the human; being; a polyhagous animal)
Animals animals 's the energy Animals the human
live eat ponder produced live being
plants
upon it
by plants
a polyhagous animal