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.
That means the rocks in your backyard probably have common minerals in them that you can identify. Minerals are divided into different groups based on their chemistry. The most common mineral group on Earth is the silicate minerals, which all have the elements silica and oxygen as their main ingredients.Most silicate minerals form when molten rock cools, either at or near the Earth's surface or deep underground.hat means the rocks in your backyard probably have common minerals in them that you can identify. Minerals are divided into different groups based on their chemistry. The most common mineral group on Earth is the silicate minerals, which all have the elements silica and oxygen as their main ingredients.