Ocean water is the least useful.
Answer:
Constructive, destructive, conservative, and collision margins
Explanation:
These are the four kinds of plate margins.
Many cultures have a long history of discrimination against African Americans.
It is called a Building: Because the suffix 'ing' is added to verbs to make noun forms. For instance a celebrity's following. Following describes the people who follow them in a noun form.Building is a noun form of a thing that exists as the result of the act of those who built it.
Answer:
The upper mantle and crust.