A: Fiction. Antibiotics used in animals are the cause of major human drug resistant diseases. Myth: âAnimal antibiotics kill more people than breast and prostate cancerâ screamed a blogger in the wake of an AP story on antibiotics used to keep food animals healthy.
Mineral Luster. Luster is a description of the way a mineral surface looks when light reflects off of the surface. Luster has two categories, metallic and nonmetallic.
This is a very common type of luster and can occur in minerals that are transparent or translucent. Some of these minerals are quartz and calcite. Greasy. The greasy type of luster can be found in minerals that look like they were coated with oil or grease.