In addition to possibly releasing harmful chemicals in the environment, mining is considered
a. the least lucrative job in the united states.
b. the most dangerous job in the united states.
c. the least dangerous job in the united states.
d. the most lucrative job in the united states.

B. the most dangerous job in the United States.

Mining is considered one of the most dangerous jobs in the World and 50-60 mining workers die in the United States every year. They are in danger from workplace accidents such as explosions, cave-ins and chemical leakages. Therefore it makes sense that this would be the answer.

Ithink it is space that makes up 70 percent

Answer primary waves;