Method to mine a mineral deposit which includes open pit mining quarrying placer mining and strip mining

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Alow-pressure belt means the air is cold and dry warm and rising cold and sinking warm and moist

Scientists believe that differences in cause hot, plastic-like rock in the asthenosphere to rise toward earth's surface. a. density c. weight b. magnetism d. composition c. conduction. d. density.