What are 2 substances that are useful because of their viscosity?

Glue and oil and btw people water does not have high viscosity!!!

Wow, this question was asked in 2008. Isn't it cool people are still answering it in 2020!?

oil for lubrication inside the engine and lubrication for engine outside the engine. A car engine by the way.

bro idk i searched this up cause i need homework answers

how many of you are here to find an answer for your homework? XD lol

i only know one and its water because it can flow through pipes quickly

Motor Oil is useful for lubricating moving parts in a bicycle. it has high viscosity

Glue because it can help put things together.

Oil because it can lubricate parts in a bicycle.

Both of these have a high viscosity

Oil

quarantine is ruining my education.