If the lifetimes of harmless substances X, Y, and Z are 1 hour, 1 week, and 1 year, respectively, and these three substance produce harmful products when they break down, which substance would you recommend be eliminated from urban air first? Why?

Question

shubhamsrg · Answer

The one which breaks down the slowest I guess if you wan't to kill the population there. :)

anonymous · Answer

so the one that takes 1 year to break down?

anonymous · Answer

why?

shubhamsrg · Answer

My statement speaks for itself. ;)
Think about it

anonymous · Answer

totally don't get it