Answer:
It is the stuff in you bone.
Explanation:
Bone marrow
C is the correct answer. Opposites attract!
If you start at 100% and divide it by 2 it will equal 50% then divide by 2 again and the answer will be 25%. Your answer should be 25%
C
Because in my opinion they do bending of a light wave as it passes at an angle from one medium to another.