The correct answer is Adverb clause. Hope this helps you.
Answer:
about 2 - 4 hours is alright
Explanation:
up to 6 hours you will feel pain in your eyes
I'm not exactly sure about what you mean with the question but the Apollo 1 crew did have a fire accident during a preflight test in 1967.
Where is your evidence? So I can answer the question
Answer:
the controversy is clear with this one lo.l
