When americans moved west in the 1800s, they did this for many reasons. which of the following reasons is an example of a pull factor that encouraged americans to migrate? a. there was not enough land available in the eastern states. b. there were plenty of land and resources available out west. c. there were few jobs available in the east. d. there was unfair treatment in the eastern states. select the best answer from the choices provided a b c d

Based on the information in the graph, what can you conclude about humans in the world in general?

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 the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed