Leg press, deadlifts, RDLs, lunges, leg extensions, leg curls, hack squats, split squats. All those will hit your legs, plus there variations. Do some sprints, run hills, stairs, those will hit your legs. Im sure there are more lifts I can't think of this second as well.
While natural gas occurs in nature as a mixture of methane and other gases, propane is actually a byproduct of both petroleum refining and natural gas processing.
It is better to use natural gas than crude oil because it is safer for our environment. Summary: 1. Crude oil and natural gas are fossil fuels that are used for heating. 2. Crude oil or petroleum consists of hydrocarbons and other organic compounds while natural gas consists mostly of methane and hydrocarbons or ethane. 3. Crude oil and natural gas are used for vehicles, but the demand for crude oil is greater than for natural gas because it is cheaper.