Salinity is the measure of the total amount of dissolved salts in seawater. It's typically expressed as a percentage (%) or parts per thousand (ppt).
The average salinity value is crucial for understanding oceanographic conditions and marine ecosystems.
Based on scientific measurements and oceanographic data, the average salinity of sea water is consistently found to be approximately $3.50\%$.
This value indicates that, on average, 3.50 grams of dissolved salts are present in every 100 grams of seawater.
Match List I with List II.
| List – I | List – II |
|---|---|
| A. Albatross Plateau | I. North Atlantic Ocean Ocean |
| B. Telegraph Plateau | II. North-West Pacific Ocean |
| C. Amsterdam–St Paul Plateau | III. South-East Pacific |
| D. Kuril–Kamchatka Trench | IV. Indian Ocean |
Arrange the following five zones of the pelagic region of an ocean in the increasing order of its depth from the surface.
1. Mesopelagic
2. Epipelagic
3. Abyssopelagic
4. Bathypelagic
5. Hadopelagic
Choose the correct answer from the options given below: