The most prominent feature of ocean topography discovered in the 1960s was:

1) volcanic activity at the ocean bottom
2) a submerged mountain ridge
3) seamounts
4) subduction zones

Reading graphs: unemployment us unemployment rate (1961-2011) identify the trends in the graph and then use the drop- down menu to complete each statement from 1961 to 1965 unemployment was in the mid-2000s through 2011. unemployment was percentage unemployed 1961 1971 1981 1991 2001 2011 year

In the 1400s, portugal’s economy was based on a. industry b. exports c. finance d. trade

What way does renewable energy differ from nonrenewable energy?