The Soft-Bodied Fossils of the Burgess Shale Were Preserved by ________

question 7

Multiple Choice

The soft-bodied fossils of the Burgess Shale were preserved by ________ as thin carbon films, due to the selective loss of more volatile components.

• A)carbonation
• B)carbonization
• C)petrification
• D)replacement

---

Definitions:

Labor Shortages

Labor shortages occur when employers have difficulty filling positions due to a lack of available, qualified candidates.

Equilibrium Wage Rates

The wage rate at which the quantity of labor demanded by employers equals the quantity of labor supplied by workers.

Strike

The withholding of labor services by an organized group of workers (a labor union).

Exclusive Union

A labor union that only represents workers from a particular company or industry, often having restrictive membership criteria.