Amineral is classified as an ore as long as
a. it’s rare and valuable
c. it’s profitable and useful
b. it can be used for jewelry
d. it’s solid and natural

When volcanoes erupt, magma (hot, molten rock) rises toward the surface of the earth. as magma cools, solid rock forms. this rock contains substances from the interior of the earth. which of the following natural resources is likely to be plentiful near subduction zones where volcanic activity has occurred in the past?

Which characteristic regarding the americas often stood out the most for many europeans? > > summary 1 2 3 4 5 6 7 8 9 10send a message review: incorrect exit which characteristic regarding the americas often stood out the most for many europeans?

In africa what do they call a crop grown for direct sale and not for use?