Question

The difference between stream and river ecosystems and other ecosystems lies in the fact that streams and rivers

• A. Move continuously in one direction and have a nutrient content that is dependent on location
• B. Support a greater diversity of aquatic plants
• C. Have highly variable salinity
• D. Include the greatest biodiversity of all ecosystems because of the fluctuating water levels
• E. Support the largest stationary plankton communities

Answer 1

The correct option is A Move continuously in one direction and have a nutrient content that is dependent on location

Rivers and streams are in continuous motion whereas other ecosystems are not. The rivers and streams have a better nutrient content which is again dependent on the location.

Salinity is majorly found in oceans. The diversity of aquatic plants and even the biodiversity are supported by other ecosystems as well.

Thus, the correct answer is option A.