The ions in the ionosphere come primarily from oxygen and nitrogen
Indicate whether the statement is true or false
TRUE
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All of the following are nonpoint sources of water pollution except
a. offshore oil wells b. livestock feedlots c. urban lands d. Croplands e. parking lots
When an upper-level low lies directly above a surface low:a
the surface low will probably weaken. b. thunderstorms will develop. c. a wave cyclone will begin to form. d. the pressure of the surface low will decrease. e. cyclogenesis will occur.
Approximately 40 grams of the radioisotope iodine-131 were accidentally released into the atmosphere during the Fukushima nuclear accident. The half-life of iodine-131 is 8 days. How long would it take for there to be 10 grams of iodine-131 left in the
environment? A) 8 days B) 12 days C) 14 days D) 16 days E) 23.7 days
What is a common hazard of this type of volcano?
A) Burning, building collapse, and suffocation from an eruption column and pyroclastic flows
B) Volcanic mudflows and landslides
C) Relatively small pyroclastic eruptions caused by localized explosions or collapse
D) All of these are correct.