Bees depend on the flowers for pollen (the male part of the plant) for all of their protein and on nectar from the flowers for their source of energy.
(Bees; depend; on the flowers for pollen; for all of their protein and on nectar from the flowers for their source of energy)
Bees
depend
on the flowers for pollen for all of their protein and on nectar from the flowers for their source of energy