Which of the following statements about mining is true?
a. mining has no long-term effects on the earth.
b. mining is unimportant to the economy.
c. mining has no ecological impact.
d. mining allows useful minerals to be extracted from the earth.

Islam and the arabic language spread throughout north africa in the 600s primarily through a. african traders b. american colonists c. european explorers d. middle eastern armies select the best answer from the choices provided

The distance a car travels between the time the driver decides to stop the car and the time the driver puts on brakes is called the reaction distance. how does the reaction distance change with speed? a. reaction distance decreases with with speed b. reaction distance stays the same with speed c. reaction distance increases with speed. d. there is not enough information to answer the question

What processes does carbon cycle through the biosphere?