Put it in a clear bottle with a pump and make it come on colors..or layered colors in the bottle..
Petroleum fractions are the useful substances that make up petroleum. Petrolium itself is not very useful, but the fuels, raw materials, and oil that are part of it are used all the time.
To my understanding, a patio and deck are the same thing. And yes, small decks and patios can be attractive, and to a degree useful, depending on what you want to use them for.
Collecting. It's an attractive-looking mineral, but not very useful.
The mechanical properties are significantly improved.
The mechanical properties are significantly improved.
useful, valuable, profitable, worthwhile, popular, attractive, appealing, inviting, charming
It increased the engine's efficiency, making it useful for other kinds of work.
It increased the engine's efficiency, making it useful for other kinds of work.
The odds of getting a useful answer will be greatly improved if you tell us what's wrong with it.
Same reason anything is improved - to make it better. Stronger, lighter, more useful...
I don't know. But I miss it... :(
Yes, if they were useful and attractive. The historian Herodotus made his history by delivering it as a series of paid public readings.