I think the answer is periphery, but it could be wrong.
Because the higher you will go this colder it will get or depending which mountain you are aiming for just like Mount Everest.
Answer:
C. a coronal mass ejection.
Explanation:
I think your answer is b based off the information I inquired
second I believe is A lemme know if I helped
Answer: Disease (economic disruptions) Also keep in mind that bacterica, cancer, tumors etc. were not brought up till the 1980's - 2000's
Explanation: Look at my comment because it got cencored for some reason