There are two main factor that make ocean water more or less dense than about 1027 kg/m3:
Answer:

Explanation:
Given:

Required:
Coordinates of the Midpoint of HX
Solution:
Midpoint (M) of HX, for
is given as
.
Let 

Thus:

Convert to improper fractions





Answer:
Explanation:
Coastal mountains: colliding tectonic plates near land
Volcanoes: A portion of the crust in a seduction zone near melting
earthquakes: A sudden shift between two touching plates
Tsunami: An undersea earthquake
A majority of the worlds population tends to concentrate on coastal regions primarily for access to trade or business with other countries.