I think the correct answer from would be the National Institute for Occupational Safety and Health (NIOSH). It is the primary agency that is responsible for doing research and recommend things to be done to avoid any work injuries. Hope this helped.
Answer:
C
Explanation:
we learned alot about this last year.
Answer:
The EM radiation most immediately lower-frequency than visible light is called infrared, and the EM radiation most immediately higher-frequency is called ultraviolet.
A light-year is a unit of distance.
The definition of a light-year is the distance light travels in one year.
I believe it is b. hope this helps!!