Q. An ecosystem is:
a. A functional unit of biotic and abiotic components which have an energy source
b. Either a part of land surface, a body of fresh water or the open oceans
c. A functional unit consisting of sunlight, air water and minerals
d. A system consisting of an energy source, producers and consumers
ANSWER: A functional unit of biotic and abiotic components which have an energy source
Answer & Explanation
No explanation is available for this question!
