Answer:
Explanation:
1- Biofuel is fuel that is produced through contemporary processes from biomass, rather than by the very slow geological processes involved in the formation of fossil fuels, such as oil. Since biomass technically can be used as a fuel directly (e.g. wood logs), some people use the terms biomass and biofuel interchangeably. More often than not, however, the word biomass simply denotes the biological raw material the fuel is made of, or some form of thermally/chemically altered solid end product, like torrefied pellets or briquettes.
2-the word biofuel is usually reserved for liquid or gaseous fuels, used for transportation. The U.S. Energy Information Administration (EIA) follows this naming practice.[1] Drop-in biofuels are functionally equivalent to petroleum fuels and fully compatible with the existing petroleum infrastructure.[2] They require no engine modification of the vehicle.[3]
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Answer is b. the ownership of slaves.
Owning slaves on large scale is a privilege the rich and powerful people enjoys, giving them large benefits of enjoying their slaves’ rewards of labor. Slave owning indicates not just the wealth one has, even the political influence and social prestige.<span>
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At some point in 1917, the royal air pressure reduced the pilot deficiency mishap rate with the aid of nearly pilot deficiencies percentage due to enforcing a pilot clinical screening machine.
Expert pilots fly and navigate airplanes, helicopters, and other kinds of planes. Airline pilots paint for particular groups, transporting people and loads on constant schedules, while industrial pilots work for companies that provide constitution flights, rescue operations, or aerial photography.
One of the primary blessings of being a pilot is you may expect an extremely worthwhile profession; from taking your first solo flight, completing your first landing, flying to a new destination to overcoming challenges, each day is profitable as a pilot within the cockpit.
Pilots are chargeable for many time-ingesting responsibilities earlier than and after a flight, including weather checks, submitting flight plans, acting pre-flight exams on aircraft, and submitting post-flight reports, to make sure each flight is operated to the best level of safety.
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