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

How pollution in water is environmental stressors impact on the biodiversity within your ecosystem?

A literate person is one who can

Which of the following statements about Earth's natural resources are true?

How do you think Earth's large temperature gradient affects the speed of its convection currents? How would this speed change if Earth's core were cooler?

When was the world's biggest building

What is the name of a city that is located at 39 degrees north and 75 degrees south?

What the imaginary line that passes through the north and south poles

Which best describes Oceania? A. A region with many isolated island nations B. A region united under a central government C. A region with a shared common language D. A region with a strong unified sense of culture

How did our exploration of the moon differ from that of mercury (and the other planets) ?

Which statement about the location of the Baltic states is not true? They have access to trade with large countries. Their remote location has kept out invaders. They have ports on well-traveled sea routes. Their climate is mild due to ocean breezes.