Question

Fill in the blanks :
The degree of concentration of common salt in sea water is called its _____.
b.
The two types of ocean currents are ______ and ______
ocean currents.
c. _____are the rise and fall of water on the surface of the ocean.
d.
The distance between the crest and trough is called _______.
Giant waves that sometimes hit the coasts are called ______.​

Answer 1

Answer:

a) The concentration of salt in seawater(salinity) is about 35 parts per thousand, on average. Stated in another way, about 3.5 percent of the weight of seawatercomes from the dissolved salts.

b) The two basic types of currents – surface and deep-water currents – help define the character and flow of ocean waters across the planet.

c) Waves are the rise and fall of the water on the surface of the ocean. Waves are formed when winds scrape across the ocean surface.