Ecosystem: An ecological system, a natural unit of living and nonliving components that interact to form a system in which a cyclic interchange of materials takes place between living and nonliving units.
(living and nonliving components; interact; ) (a cyclic interchange of materials; takes; place; L:between living and nonliving units; L:a system)
living and nonliving components a cyclic interchange of materials
interact takes
place L:between living and nonliving units L:a system