A condenser
A condenser
A condenser
its not
Biotechnological industries.
The bicycle wasn't discovered, it was invented. A man with an idea had someone build a contraption. The design was somewhat useful, so after a while someone else thought of improvements, and had a slightly different machine built. Later, someone else thought of more improvements, built yet another version. And so it went, until we got the bike of today.
The design helps make a sketch of how it will work and the main bluprint
they can be useful in the future annd when we run out of supplies
Same reason anything is improved - to make it better. Stronger, lighter, more useful...
It is making the design useful, comfortable and suited to the person that is useing that item ,
Short answer Yes. Petrol is useful for running a engine, and extremely dangerous if misused.
The engine will not run without a supply of petrol so you would think it is useful.
The engine will not run without a supply of petrol so you would think it is useful.