Large-scale surface water circulation systems in the oceans are ...

[Mr. Wonderful]

Large-scale surface water circulation systems in the oceans are known as ___________________ _. Fill in the blank(s) with the appropriate word(s).

Question 2

The average salinity of seawater can be expressed as ___________________ _ grams per kilogram of
  seawater, ___________________ _ parts per thousand, and ___________________ _ percent. Fill in the blank(s) with the appropriate word(s).

[fdliggud]

Answer to Question 1

gyres

Answer to Question 2

35, 35, 3.5