Each of the four areas in the image above is the same size which area has the highest population density

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."

The action of eventually a low island to form. a. wind b. waves c. volcanoes d. tectonic plates

In russia which of these challenges affects the transportation of both petroleum products and other goods? a poorly repaired roads b harsh weather and vast distances c frozen waterways d separatist movements