What is a potential ill effect of adding iron to ocean waters?

Which of the following regions currently has the largest percentages of immigrants A North america B Latin america C Australia and new Zealand D east Asia E middle east

A shark would not be a good index fossil because

Question: 8 of 10 What do many scientists believe hit the earth 65 million years ago and ultimately caused the extinction of the dinosaurs? A. an universe B. an asteroid C a meteo D. a comet

3. About 200 years ago, Robert Malthus, an English economist, predicted that because population increases exponentially, whereas food supplies increase arithmetically, population would soon outstrip available food and population would have to be

Which native tribe gave its name to one of the subregions of Latin America?

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.