Question

The ecosystem boundary of a drainage basin can be defined by ________.

Answer 1

Solution:

The ecosystem boundary of a drainage basin can be defined by the mountains, hills and valleys that determine where the water flows.

Since the Ecosystem is define as all the organisms and their physical and chemical environment within a specific area where energy and matter influence the distribution and abundance of organisms present.

Thus the right answer is mountains, hills and valleys that determine where the water flows.