Question

select the correct answer. a freshwater stream flows into the ocean, as shown in the diagram. which statement correctly describes how the stream affects the salinity of the ocean? a. salinity increases because the stream adds salt to the ocean. b. salinity decreases because the stream adds freshwater to the ocean. c. salinity increases because the stream adds freshwater to the ocean. d. salinity remains the same because the stream adds freshwater to the ocean.

Explanation:

Step1: Recall salinity concept

Salinity is the amount of salt in water. Fresh - water has low salt content while ocean water has high salt content.

Step2: Analyze effect of freshwater stream

When a freshwater stream flows into the ocean, it dilutes the salt - water of the ocean. Since freshwater has little to no salt, the overall salt - to - water ratio in the area where the stream enters the ocean decreases.

Answer:

B. Salinity decreases because the stream adds freshwater to the ocean.