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.
Physical properties of minerals Luster â¢ Appearance of a mineral in reflected light â¢ Two basic categories â¢ Metallic â¢ Nonmetallic â¢ Other descriptive terms include vitreous, Department Environmental, Earth, & Atmospheric Sciences silky, or earthy Galena (PbS) displays metallic luster.