gasoline
The least expensive mode of transportation is by water. It is fuel efficient, less polluting and the safest. It is also the least expensive to move cargo.
bio-diesel
Natural gas, which is largely methane, releases less carbon dioxide when burnt than the other fossil fuels, coal and oil. So it is the least polluting of the fossil fuels. However, natural gas, or methane, is released into the atmosphere by belching cattle, anaerobic decomposition in landfills, and melting tundra and lake beds. It is a greenhouse gas 21 times more dangerous than carbon dioxide, so when it escapes into the atmosphere, it is very polluting.
Note that "least expensive" is two words. The least expensive item in our restaurant is the white rice.
Formica or laminate it is the least expensive.
Wind.
The least expensive car is probably the Tata Nano.
bananas are the least expensive and most popular fruit.
fossil fuels are the least costly for us to use.
No. Purebreds cost more nowadays. Now older dogs and mutts are the least expensive ones. Unless you're talking about a kids toy, then they are least expensive.
The least expensive car in the U.S. is the Nissan Versa 1.6 S which has a base price of $12,800. The second least expensive is the 2014 Chevrolet Spark LS at $12,995.
water.