Question

the salinity in salt marshes can vary throughout the day because _. a. river flow changes throughout the day b. the amount of salt water in a marsh depends upon ocean tides c. daily winds and rains result in salt and fresh water mixing d. salt water collects in the lowest elevations please select the best answer from the choices provided

Explanation:

Salt marshes are influenced by ocean tides. Tides bring in and take out salt - water, changing the salinity. River flow changes don't mainly cause daily salinity variations in salt marshes. Wind and rain have a less direct impact on daily salinity compared to tides. Salt - water collecting in low elevations doesn't explain daily salinity changes as well as tides.

Answer:

B. the amount of salt water in a marsh depends upon ocean tides