Answer:
Number 1 is a I am not sure about number 2(I'm having a brain fart XD)
Edit
number 4 is a and I cannot read number 3
(I accidently rated my own question. oops!)
The soil profile is the name given to the vertical sequence of the layers of soil. Each layer of soil is considered a "soil horizon" which makes up one of the distinct layers of soil within a soil profile.
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.