Question

make it's summary
Vegetable oil has been known from antiquity No household can get on without it, for
it is used in cooking Perfumes may be made from the oils of certain flowers, Soaps are
made from vegetable and animal oils.
To the ordinary man, one kind of oil may be as important as another. But when the
politician or the engineer refers to oil, he almost always means mineral oil, the oil that
drives tanks, aeroplanes and warships, motor cars and diesel locomotives; the oil that is
used to lubricate all kinds of machinery. This is the oil that has changed the life of the
common man. When it is refined into petrol, it is used to drive the internal combustion
engine. To it we owe the existence of the motor car, which has replaced the private
carriage drawn by the horse. To it we owe the possibility of flying. It has changed the
methods of warfare on land and sea. This kind of oil comes out of the earth. Because
it burns well, it is used as fuel and in some ways it is superior to coal in this respect.
Many big ships now burn oil instead of coal Because it burns brightly, it is used for
illumination; countless homes are still illuminated with oil burning lamps. Because it
is very slippery, it is used for lubrication. Two metal surfaces rubbing together cause
friction and heat. But if they are separated by a thin film of oil, the friction and heat are
reduced. No machine would work for long if it were not properly lubricated. The oil used
for this purpose must be of the correct thickness; if it is too thin it will not give sufficient
lubrication, and if it is too thick it will not reach all parts that must be lubricated
The existence of oil wells has been known for a long time. Some of the Indians of North
America used to collect and sell the oil from the wells of Pennsylvania. No one, however,
seems to have realised the importance of this oil until it was found that paraffin oil could
be made from it. This led to the development of the wells and to the making of enormous
profit. When the internal combustion engine was invented, oil became of worldwide
importance​

Answer 1

Answer:

Vegan soaps (or vegetable soaps) are made from fats or oils of vegetable origin rather than from saponified tallow or other animal fats. These soaps are preferred by vegans and may be preferred by vegetarians, they are also very sustainable and do not harm the environment due to its natural products. In addition to fats, the other main ingredient is either wood ash, potassium hydroxide, sodium hydroxide and essential oils.