In the title, insert AND MIXTURES after SUBSTANCES .

And then we can replace the other half with a combination of advanced bio fuels and safe natural gas.

Mist liquid droplets of a substance or mixture suspended in a gas (usually air)

Combustion of fossil and biomass fuels produces a number of different airborne pollutants that have impacts at different spatial scales.

Mist means liquid droplets of a substance or mixture suspended in a gas (usually air)

And it can come from biofuels.

Transportation technologies are progressing on many fronts towards lower emissions of air pollutants and greenhouse gases, including, for instance cars powered by electricity, hybrid electric engines and fuel cells buses and commercial vehicles powered by compressed natural gas the use of alternative fuels derived from various biomass sources and continued improvements in the fuel efficiency and emissions of standard gasoline and diesel powered vehicles.

Dust means solid particles of a substance or mixture suspended in a gas (usually air)

A further proposal is the passivation of spent rocket stages and space objects remaining in orbit, i.e. the freeing from tanks and balloons on rocket stages and space objects of propellant components and gases which could cause the explosion of the tank (or balloon) and break up of the object even after a considerable period of time has elapsed.

Renewable energies include biomass for fuel (wood and straw), biogas, biofuel (bioethanol and biodiesel), electricity cogenerated from sugar cane, solar energy, wind energy, thermal hydroelectricity, and fuel cells.

Catalytic converters also may limit the scope of manufacturers to reduce CO2 emissions because of required air fuel mix ratios.

Oil s monopoly over transportation can in part be destroyed by electrification (via plug in hybrid electric vehicles, for example), and also by second generation biofuels, such as butanol from cellulosic feedstocks, and by algae and waste based biofuels.

Gas and heating fuel

As everyone knows, air is a mixture of gases.

Conventional farmers use chemical fertilizers made from fossil fuels that they mix with the dirt to make plants grow.

We're all breathing air right now. Air is a mixture of oxygen and nitrogen, about 20 percent oxygen. About 80 percent nitrogen is in our lungs.

Heating fuel

Air pollution1 results primarily from the combustion of fossil fuels in transportation and power generation, from various industrial emissions and from large scale biomass burning in some parts of the world.

You can make some sort of a biofuel cell.

Biofuels. Liquid biofuels are renewable transport fuels made from plant materials.

35. Aviation fuel.

Some 640 kg of fuel, 28 kg of liquid oxygen, 20 kg of liquid air and 420 kg of water were also delivered to the refuelling components compartment.

Aviation fuel (each)

The mixture for emulsions typically has the following composition 60 85 ammonium nitrate, 5 30 water, 2 8 fuel, 0.5 4 emulsifier agent, 0 10 soluble flame suppressants, and trace additives.

Biofuels are fuels that are grown.

We're running out of fossil fuels.

Gas and heating fuel

3336 MERCAPTANS, LIQUID, FLAMMABLE, N.O.S. 3 185 M or MERCAPTAN MIXTURE, LIQUID, 274 FLAMMABLE, N.O.S.

Hydrocarbon gas, mixture liquefied, n.o.s. Isobutane

Aviation fuel (total costs)

It builds soil it cleans air it cleans water it mixes the cocktail of gases that you and I need to live.

Many Parties have measures in place that encourage the switching from solid cooking fuels, such as biomass and coal, to cleaner alternative fuels, such as kerosene, liquefied petroleum gas (LPG), natural gas and biogas.

Air is a mixture of various gases.

The combustion of fossil fuels, wood, and other biomass increases the amount of airborne particles, which, in a somewhat simplified manner, we can describe as white or black. Both types can be found in varying amounts in all emissions.

It's 130 octane fuel.

Aviation fuel and lubricants.

Aviation fuel and lubricants.

37. Aviation fuel and lubricants.

41. Aviation fuel and lubricants.

(b) Aviation fuel and lubricants.

34. Aviation fuel and lubricants.

39. Aviation fuel and lubricants.

26. Aviation fuel and lubricants.

Aviation fuel and lubricants.

Aviation fuel and lubricants.