_ are the economic foundation for the coastal countries of west and central Africa. a. agricultural products
b. manufactured goods
C. gold and silver
d. All of the above

Uranium is a mineral which is used to generate electricity. predict and explain the long term effect on the environment of obtaining and using uranium as a source of energy.

What does it mean if a piece of wood is ripped? it has been water-damaged. it has been cut with the grain. it has been cut against the grain. it has been covered with laminate.

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer