False. Gneiss is formed within high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. It is made up of layers of sheet-like planar structures that are characterized by alternating darker and lighter colored bands, called "gneissic banding".
B - mutation isn't always god, therefore is most likely no a biological adaptation.
Answer:
True.
Explanation:
Temperatures drop as altitude increases.