Answer:
C-In all areas of science
Explanation:
Ap3x
Of Uranium-235 remains after 2.8 x 10^9 years, what was the original mass of the sample of Uranium-235? The half-life of Uranium-235 is 7.0 x 10^8 years. Uranium-232 has a half life of 68.8 years.
Ions.......is your answer
The force of gravity does.