A hurricane is a group of rotating
A) waves.
B) surface currents.
C) convection cells.
D) thunderclouds.
D
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Soil erosion is a natural process in undisturbed ecosystems.
Answer the following statement true (T) or false (F)
Australia and New Zealand are described as at the "opposite side of the world" from England. If London's centroid coordinates are 51.5O N 0.13O E, and the coordinates for Wellington, NZ are 41.3O S 174.8O E, we can conclude
A. that the statement is false since the antipode of London is in the Indian Ocean. B. that the statement is fairly accurate, but not precise. C. that Wellington really is the exact antipode of London. D. that if you dug a hole straight down from London, you would come out in China.
Which of the following represents a type of top-down regulation for rattlesnakes living in Arizona?
A) The availability of fresh water B) The number of mice in the region C) Abundance of rocks under which snakes can hide D) The number of snake-eating hawks and humans in the region
Which area did NOT have casualties caused by the Indonesian earthquake of 2004?
A. India and Sri Lanka B. Indonesia C. the eastern coast of Africa D. islands in the Indian Ocean E. All of these areas had casualties.