Wolves depend for food upon animals that eat plants, such as deer. If there are no plants, there are no deer. The wolves would starve.
Aquatic plants
i cant live without you
i cant live without u
you cant live without water or air
They can and did live quite happily without it.
They can.
insulin
Gravity
because
we cant
You Cant Live Without Your Liver!
All of them, really.