Chapter 6 Notes Lesson 1 Earth’s Atmosphere The thin protective blanket of air that surrounds Earth is called the atmosphere. We couldn’t exist without it. It contains primarily nitrogen (78%) and oxygen (21%). The atmosphere protects life on Earth by 79.16 Kb. 1
Emergency Management in China Rmb, is used in the disaster prevention and reduction field. In the coming 2-3 years, the disaster prevention and reduction system will experience high-speed development and China will have the biggest economic market in the world 55.84 Kb. 1
World Geography Semester Review Continental Drift- the hypothesis that all continents were once joined into a super continents that split apart over millions of year 17.36 Kb. 1