Identify two ore types that contain the same element?
azurite, malachite, bornite and chalcopyrite are all copper ores
Mostly the muffler, but a nice set of headers help, too. Sometimes exhaust tips help, too. If you want it to really sound Vrrrrrrrrr, then don't put an exhaust system on it at all, run straight motor:-D
Tail pipe with a baffle insertion makes it sound tough without the possibility of getting a ticket for not having a tail pipe. Sounds like glass packs!
That is a good question I hope you'll get some reasonable answers
Calcium in limestone and in dolomite (calcium carbonate occurs in two forms - as aragonite, and as calcite). Iron is contained in both hematite and in iron pyrites.
