3. which is not a major component of natural gas?
a hydrogen sulfide
b carbon monoxide
c methane
d propane

B. carbon monoxide

Explanation:

Natural gas is composed of a mixture of light hydrocarbons (methane, ethane, propane, butane, hydrogen sulfide and other gases in smaller proportions) which, subjected to room temperature and atmospheric pressure, remains in the gaseous state. It is an energy source found in nature in two distinct forms. It can be obtained from deposits and by burning biomass (sugarcane bagasse).

The natural gas found in deposits is usually associated with oil. It constitutes finite reserves, and, according to research carried out by the IEA (International Energy Agency), if the average consumption rate of the last decade is maintained, natural gas deposits will run out in 100 years. This energy source harms the environment less than oil and coal. However, because it is of fossil origin, its combustion contributes to the greenhouse effect.

Carbon monoxide is not an important component of natural gas.

a fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.[1] the age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years.[2] fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.[3] other commonly used derivatives include kerosene and propane. fossil fuels range from volatile materials with low carbon to hydrogen ratios like methane, to liquids like petroleum, to nonvolatile materials composed of almost pure carbon, like anthracite coal. methane can be found in hydrocarbon fields either alone, associated with oil, or in the form of methane clathrates.

the theory that fossil fuels formed from the fossilized remains of dead plants by exposure to heat and pressure in the earth's crust over millions of years was first introduced by andreas libavius "in his 1597 alchemia [alchymia]" and later by mikhail lomonosov "as early as 1757 and certainly by 1763".[4] the first use of the term "fossil fuel" was by the german chemist caspar neumann, in english translation in 1759.[5]

in 2017 the world's primary energy sources consisted of petroleum (34%), coal (28%), natural gas (23%), amounting to an 85% share for fossil fuels in primary energy consumption in the world.[6] non-fossil sources in 2006 included nuclear (8.5%), hydroelectric (6.3%), and others (geothermal, solar, tidal, wind, wood, waste) amounting to 0.9%.[7] world energy consumption was growing at about 2.3% per year. in 2015 about 18% of worldwide consumption was from renewable sources.[8]

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.