Can someone pls help

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an

What in scientific term why the salty popcorn causes this thirst

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13