A very fast high-altitude river of air that forms in the upper troposphere is called a(n)

The discharge of a river will increase if

__________ occurs when electrostatic potential in a thunderstorm becomes great enough to drive electrons across a large expanse of insulating air.

Which of the following could lead to desertification?

A supercell thunderstorm

A boundary between two air masses is called a(n)

Why do deserts form in polar regions?

The Galveston Hurricane of 1900 was the worst natural disaster in U.S. history, with more people dying than any other disaster when a 15-ft __________ covered the island, whose highest land elevation was 8.7 ft.

Acid precipitation lowered the pH of soil in a terrestrial ecosystem that supported a diverse community of plants and animals. The decrease in pH eliminated all nitrogen-fixing bacteria populations in the area. Which prediction most accurately reflects the impact this will have on the community?

Why is tropical air warmer than polar air?