Question

Oceanographers may study the chemical content of sea water by taking what?

Answer 1

Samples and measurements?

Explanation:

I am not an oceanographer, but I imagine it would be fairly easy to take samples from over the world's oceans, and measure the density accurately with a hydrometer. Years ago I managed to swim in the Dead Sea, which has a remarkably high saline content. You did notice the change in buoyancy....