The Tropic of Cancer is just above 23 degrees north; the line at about 23 degrees south is called the?

The earth's internal process which drives seafloor spreading is

Which of the following is not a consequence of urban sprawl? increased racial tensions the relocation of industry to the inner cities higher poverty rates in the inner cities higher unemployment rates in the inner cities population losses to inner cities

Where is the only active diamond mine in the u.s.?