3. According to the passage how are the divisions of the geologic time scale (eons, ords, periods) typically marked? A. By changes in the Earth's magnetic field recorded in rocks. B. By the discovery of new types of minerals in rock layers. C. By major geological or paleontological events, such as mass extinctions. D. By the gradual increase in the number of volcanic eruptions.

1) Which of the following countries border Nepal? a. China b. Bhutan c. Bangladesh d. Myanmar

9. What geological feature was formed by the subduction of the Nazca Plate? a) Mid-ocean Ridge b) Andes Mountains c) Alps d) Himalayan Mountains

Select the statement(s) that accurately describe metamorphic rock. Metamorphic rock is more compact and dense than other types of rock. Metamorphic rock is formed on the Earth's surface. Metamorphic rock is made from other types of rock. Metamorphic rock is formed as a result of heat and pressure. Metamorphic rock is formed from the layering of sediments.

3. Problem Identification: Describe a specific problem related to geography environment, or trade.

10. What is created when hot magma rises at divergent boundaries? a) Mountain ranges b) Subduction zones c) Deep ocean trenches d) New crust

8. Which fault marks the boundary between the North American Plate and the Pacific Plate? a) Anatolian Fault b) San Andreas Fault c) Mariana Trench d) East African Rift

Where are most of the nations where Spanish is the official national language? South and Central America Europe Africa

Which of the following accurately represents the processes that solidify sedimentary rock? combustion and solidification combination and pressure compaction and cementation convection and conduction

1. What causes high and low tides on Earth? The moon's gravitaional pull on Earth causes water to bulge on two sides of Earth. Water swells when tsunamis occur in two areas of Earth at the same time. Earth's rotation is so fast, water will swell and shrink twice daily. Earth is tilted on an axis, causing water to spread unevenly throughout the planet.

Why are population pyramids important for Geographers? (5 sentences) __