Earth as a System Earth has four major spheres: the atmosphere, the hydrosphere, solid Earth, and the biosphere. Which of these spheres are absent, or nearly absent, on the moon? List three processes that happen on Earth but do not happen on the moon because the moon lacks these spheres.

Mosses, lichens and shrubs can be found where in russia? a.grasslands b.mountain regions c.coastal plains d.siberian tundra

Match your vocabulary word to its definition. 1. emigration 2. immigration 3. migration 4. overpopulation 5. sustainable development 6. under population 7. unsustainable development 8. urbanization the movement from one place to another the number of people exceeds the available natural resources in an area leaving one's homeland to settle in a new place the increase in the population of a city the movement of people to a new country the ability to meet current needs without reducing the ability to meet future needs resources being used up at a faster rate than they can be replenished birth rate insufficient to replace the existing population

Why is democracy better than a dictatorship?