### substance | leather:

Fruit leather
* are a great way to use leftover fruit pulp from making jelly.
* is made by drying thin layers of pureed fruit in the oven or dehydrator.
* made without sugar make an excellent snack or dessert for diabetics.

### substance | leather:

Morocco
* has four perennial rivers and many dams have been built with potential for power generation
  - lots of trilobites, and there are also places in the United States known for trilobites
  - one of Africa's leading mining industries
  - primarily a Mediterranean climate
  - tendency in direction of democracy, but is still ruled by the powerful king
  - two climatic zones
* is by far one of the more liberal Islamic countries.
* is currently the biggest importer of locally produced seed
  - world's largest exporter
* is located in an active seismic zone
  - north Africa across the Strait of Gibraltar from Spain
  - on the northwestern corner of Africa
  - part African, part Middle Eastern
  - responsible for planting the greatest number of landmines in recent times
  - situated in the north-west corner of Africa
  - where black Africa meets Arabic in full effect
+ Anchovy, As a food source: Anchovies :: Edible fish :: Fish of the Atlantic :: Fish of the Pacific :: Fish of the Indian ocean :: Clupeiformes :: Teleosts
  * The European anchovy, 'Engraulis encrasicolus', is the anchovy of commerce. Morocco now leads the world in canned anchovies. The anchovy industry along the coast of Cantabria now dwarfs the traditional Catalan salters, though the industry was only started in Cantabria by Sicilian salters in the mid 19th century.

Natural leather
* comes from cattle skins, or hides.
* get their softness from the leather being left in a natural state.
* is made from tanned animal hide and animal skin
  - waterproof to protect gun from moisture

Nose leather
* is flesh or coral pink.
* light warm brown and paw pads are a warm pinkish tan.

Patent leather
* are leathers.
* is dress-down and because it is shiny, it is to be worn with dull cottons
  - leather that has been given a high-gloss finish

### substance | leather:

Real leather
* comes from animals who have suffered horribly.
* is composed of microscopic fibers which are inter linked
  - the top split of the hide
+ Substitute good: Microeconomics :: Goods
  * For 'imperfect substitutes', the customer has to make a trade-off, either in price, or in quality. Artificial leather is much cheaper than real leather, and can replace it in many situations - artificial and real leather are substitute goods. Real leather is much more durable, and has a different look and feel. When these factors are important, the two are not interchangeable. For this reason artificial and real leather are imperfect substitutes.

Roan
* are horses
* combined with seal bay can result in a buckskin sort of color.

Sheepskin
* are also popular bed cushioning
* helps prevent bed sore discomfort caused by pressure, moisture, heat and friction.
* is big business in Australia and is sold at a good price in many shops
  - quite resistant to getting totally wet

Suede
* is the first commercial programming language to incorporate ambiguity at a fundamental level.
* material that requires attention and care to maintain.

Ligand
* binding causes ion channels to open
  - the receptor protein to undergo a change in shape
  - typically induces receptor dimerization or multimerization
* has a very non-planar ester group, which is surely wrong.
* is any small molecule that can bind to a larger molecule
  - the target cell of a signal molecule
* seeks two receptors into binding and mutual phosphorylation.

Lightweight material
* are critical to the development of highly fuel-efficient vehicles.
* are the key to low fuel consumption and lower emissions in cars
  - keys to low fuel consumption and lower emissions in cars