Environments balance the living and nonliving: Ecosystems are both fragile and complex.
(the living and nonliving: Ecosystems; are; fragile and complex) Context(the living and nonliving : Ecosystems are,List([21, 61))):(Environments; balance; )
the living and nonliving
the living and nonliving: Ecosystems Ecosystems are,List([21, 61))):(Environments
are balance
fragile and complex