The document discusses several key facts about the desert biome: - Deserts have extreme temperature ranges from 58-60 degrees F on the hottest days to -36 degrees C on the coldest nights. - Deserts cover 20% of the Earth's land. - Most desert animals only come out at night to avoid the extreme heat during the day. - Sidewinder snakes move sideways in a J-shape pattern leaving tracks in the sand as a primary means of movement. - Camels' humps are made of fatty tissue and store fat, not water. - Hairy scorpions are venomous to prey but not usually dangerous to humans unless one is allergic. - Desert plants