If the plant is to prosper, the roots must be able to gather enough water and nutrients to support the top growth.
(the plant; is; to prosper) (the plant; to prosper; ) (the roots; must be; able to gather enough water and nutrients) (the roots; to gather; enough water and nutrients to support the top growth)
the plant the plant the roots the roots
is to prosper must be to gather
to prosper
able to gather enough water and nutrients
enough water and nutrients to support the top growth