The rate of decay of any radioactive element?

A. fluctuates
B. depends on external factors
C. always changes
D. never changes

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.