Ecosystems can be any size as long as they include both living and nonliving parts affecting each other.
(Ecosystems; can be; any size; T:as long as they include both living and nonliving parts) (they; include; both living and nonliving parts) (parts; affecting; each other)
Ecosystems they parts
can be include affecting
any size T:as long as they include both living and nonliving parts
both living and nonliving parts
each other