A and C are the correct answers. Because there is no gravity to pull fluids down, they are in your face and hands more than normal. Our bones and muscles become weaker because without gravity objects lack weight.
E. The nuclear fuel in the stars will eventually burn out, making the universe a cold and dark place
Element Oxidized: S (S^(2-) --> S⁰)
Element Reduced: N (N^(5+) --> N(2+))
Oxidizing Agent: HNO3
Reducing Agent: H2S
