Rain
I beg to differ. Rain may come down, but accdording to the water cycle, the "rain" becomes rundown water, and eventually evaporates, therefore, rain does go up.
Well it is easy age never gos down money bills don't go down i mean how cant you get that? BUT ANYWAYS THAT'S THE RIGHT ANSWER
The years never go down addition your age and the time
Vomit
age
a pulley is something when you pull it up it gos down and when you pull it down it gos up and Mohammad Rabee wrote this and I wrote what does a wheel and axle mean.
age
your age
your age
rain
your age
A waterfall
Age.