Where are most seafloor spreading centers located?
a. continental margins
b. polar regions
c. undersea volcanoes
d. mid-ocean ridges

Soweto was the site of one of the that swept across south africa in the late 1970s. in his effort to end apartheid, desmond tutu turned to . the united states responded to south africa’s apartheid policy in the 1980s by .

Witch one is it soo it the the question b.a,b,c,d

The increase of pollutants from in mexico has raised concerns about garage to health and the environment