Carl H. Eigenmann an ichthyologist wrote Cave vertebrates of America: a study in degenerative evolution (1909) in which he concluded that cave evolution was essentially degenerative. The entomologist William Morton Wheeler and the Lamarckian Ernest MacBride (1866-1940) also advocated degenerative evolution.
fumaric acid - a colorless crystalline acid with a fruity taste; used in making polyester resins. acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt. Translations. FumarsÃ¤ure
Propionic acid (from the Greek words protos, meaning first, and pion, meaning fat; also known as propanoic acid) is a naturally occurring carboxylic acid with chemical formula C H 3 CH 2 C O OH.ropionic acid is also useful as an intermediate in the production of other chemicals, especially polymers. Cellulose-acetate-propionate is a useful thermoplastic. Vinyl propionate is also used.