Question

What ocean layer contains approximately 90% of Earth's sea water​

Answer 1

Surface layer, Thermocline

Step-by-step explanation:

Surface layer contains the most water mainly because under the ocean you can find rock/dirt layer's

Answer 2

Answer: Deep ocean (or below thermocline)

Step-by-step explanation:

Most of Earth’s seawater (around 90%) is in the deep ocean, located below the thermocline and pycnocline. The deep ocean´s water is colder and denser than other ocean layers.

Because deep waters are not influenced by the wind, they are non-turbulent and homogenous, meaning they have a constant temperature and salinity from place to place.