Earth Earth is metamorphic rock, which is created from the transformation of pre-existing rock types through high pressures, high temperatures, or both. The most abundant silicate minerals on Earth's surface include quartz, feldspars, amphibole, mica, pyroxene and olivine. Common carbonate minerals include calcite (found in limestone) and dolomite. The elevation of the land surface varies from the low point of at the Dead Sea, to a maximum altitude of at the top of Mount Everest. The mean height of land above sea level is about . The pedosphere is the outermost layer of Earth's continental surface and is composed of soil
The Adventures of the Wilderness Family to the cabin to get his parents, Jenny goes after Crust, who has managed to scare the bear away. Skip is informed by Toby of what happened, and he heads out with his rifle to find his daughter. While trying to find their way back to the cabin, Jenny and Crust are attacked by a pack of gray wolves who chase them down to a nearby lake and almost attack Jenny. Crust is able to fend the wolves off long enough for Skip to arrive in the nick of time and drive the pack away. Despite this frightening encounter, Jenny