How does the C horizon form?

A) Rainwater washed clay and minerals from the A horizon to the C horizon

B) Plant roots weather pieces of rock

C) Plants add organic material to the soil.

D) Bedrock weathers and rock breaks up into soil particles

What is interdependence? Question 5 options: Countries thrive with policies that promote isolation. Countries must depend on other nations to provide some needs. Countries are able to be self-sufficient with a little practice.

Read the section titled "Nuclear Power." What are the benefits and drawbacks of using nuclear power? (Site 1)

Why is pollution never strictly a local problem?

What do Spain and Portugal make up

Match each moon or planet to the most accurate characteristic. Europa It doesn't have enough gravity to have an atmosphere. Mars The temperature of its atmosphere is increased by the greenhouse effect.

1. Describe the most important diagnostic properties in igneous rocks. 2. What minerals would you expect to form in basalt? (Hint: Consider composition and Bowen's reaction series). Explain your answer.

What is the most important role of the ecosystems of the Andes? A. Keep the environment stable and reduces air pollution B. Reduce the chance of floods, desertification, and landslides C. Regulate the availability of freshwater D. All of the above

All of the following are examples of thematic maps except:

Which is used by scientists as evidence that Earth's inner core is solid? O A. S waves cannot travel through the inner core, creating a shadow zone. O B. Seismic waves change speed when they go from the inner core to the outer core. O C.

What role did geography play in the early African kingdoms? Volcanic eruptions scared away attackers. Mineral deposits brought wealth and power. The Great Rift separated them from the continent. Tropical storms extended the growing season.