Question

water flows in one direction. water contains less than one percent salt. fish, frogs, and insects live here. what am i?

Explanation:

• Estuary: It is a semi - enclosed coastal body of water where freshwater from rivers and saltwater from the ocean mix. The salinity is usually higher than that of a river (but lower than the ocean).
• River: Water in a river flows in one direction (from source to mouth). It has low salinity (less than 1% salt). It is a habitat for fish, frogs, insects etc.
• Marine: This is a general term for the oceanic environment which has high salinity.
• Ocean: It has high salinity (about 3.5% on average) and is a vast body of water.

Answer:

B. River