All you have to do is basically as you said, drop the e in exposure and add -ure to the end.
Exposure
Answer:
My letter is below
Explanation:
Dear Uncle Pete,
I am writing this letter to ask you Kindly if you can pay my school fees. Uncle,I have been a good child and Education is Very important, please pay my school fees
From, Layla
Answer:
In case Earth becomes uninhabitable.
Explanation:
If for whatever reason we are forced to leave Earth there are no other hospitable planets we could live on. By making mars more like Earth we could eventually relocate to mars.
Answer:
From the information you've given me in your question, I would say C. However, I might not be getting the full answer!
Explanation:
Hope this helped, dude!