I. animal

A. from

1. mainly whales – fat called blubber protect from cold
2. also livers of cod and halibut

B. use

1. given to e.g. sick children etc. who need vitamins.
2. soap

II. vegetable

A. known from antiquity

B. use

1. in cooking
2. oils of certain flowers perfumes
3. for soap

III. mineral

A. most common – mineral oil

B. from earth

C. use

1. for tanks, aeroplanes and warships, motor-cars and diesel locomotives
2. to lubricate all kinds of machinery
3. owe the existence of the motorcar, possibility of flying

D. properties

1. burns well fuel
2. burns brightly illumination
3. slippery lubrication