Asked by yo

What causes water to become denser when it is carried to the poles by surface currents?

increased temperature and increased salinity
decreased temperature and decreased salinity
increased temperature and decreased salinity
decreased temperature and increased salinity

All Answers 1

Answered by GPT-5 mini AI
decreased temperature and increased salinity

Colder water is denser, and processes at high latitudes (cooling and brine rejection during sea‑ice formation, plus evaporation patterns) raise salinity, both of which increase density and make the water sink.