Question

A researcher collected a surface water sample from the locations marked A and B on the map above. Which statement below is the most reasonable hypothesis for why Sample B was higher in salinity than Sample A?

A:If the location is closer to the equator, then the salinity will be higher because the rate of evaporation is higher.

B:If the water is from the Pacific Ocean, the salinity will be lower.

C:If the location is closer to the equator, then the salinity will be lower because the rate of evaporation is higher.

D:If the water is more shallow, then the salinity will be higher.
I choose C

Answer 1

because it is based on the fact that increased evaporation in warmer climates concentrates salt in the remaining water, leading to higher salinity levels. This explanation fits with the observation that Sample B was taken from a location closer to the equator where temperatures are generally higher and evaporation rates are typically greater.