If a fire hydrant has H20 inside, what does it have on the outside?!
Question: A dog peeing on it.
Answers: A dog peeing on it.
WTF??? air......
metal?
Metal, air which is made up of atoms, mostly those of nitrogen and oxygen.
paint....and doggy pee
A life of its own and maybe the subtle scent of dog urine.
Red paint.
Dog p*iss.
Air pressure.
Uh, metal? paint? rust?
?
H3O
H2O on the outside as well..it's just empty
WTF!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!...
air?
ductile iron
well, H2O, and alot of kids playing in front of it in the summer!
H2O inside, and K9 P outside.
Not all Hydrant use water.
Sky scrapers have Pressured sand.
Airports use a foaming agent in their fire protection systems. (You wouldn't see a Hydrant by a runway because they are recessed in the ground for safer landings).
So now you have to ask the question with specifics