Soil, waste ,storm
Electrical energy. The whole purpose of power lines is to transfer energy from one place to another, in the form of an electrical current.
might be a clogged fuel filter or some kind of leak in your fuel lines allowing air in the system.
There is no scientific evidence to suggest that living near power lines causes any kind of health problems.
There may be 'lines' strung between buildings on some research stations, and a few of them may provide power to some buildings. However, there is no 'power grid' or dependable power -- any kind, except wind -- source on the continent.
inactive
intersecting lines divergent lines convergent lines
Curved lines may be printed or drawn on any kind of map.
Straight lines.
Parallel lines
lines that are beside each other and never meet
They are undefined lines.
Straight ones... Not truly lines, but segments