Because it helps the leather sofen to help bend teh leather into shape
It part of the substances used to make things.
Wool
There are many different materials used to make shoes. Rubber is a main component, as well as plastic and cloth.
The materials needed to make shoes depends on the type of shoe being made. Common materials used to make shoes are leather, nylon, plastic, vinyl, polymer and rubber.
. A variety of materials are used for making shoes. Leather fabrics, plastic, rubber, fabrics, wood, jute fabrics, and metal are all materials used in shoe making.
Petroleum is available in the places of Saudi Arabia , Russia, Iraq etc.,It is used make various products like Ink, toys, dolls, tires, tents, shoes, combs dice etc.,
It part of the substances used to make things.
Petroleum
most likely since petroleum is used to help make almost every item found in a household
Fractional Distillation from petroleum
Petroleum
Rubber is commonly used to make the outer soles for shoes.
It's petroleum
used to make plastic and power engines
CNG can be used instead of petroleum
Fuel, oil, diesel, some plastics among a laundry list of other things.
Corn is used to make ethanol because it is burns cleaner than petroleum.