La Niña
A) always occurs simultaneously with El Niño.
B) always occurs in the year after El Niño.
C) lasts between 3 and 6 months.
D) is caused by intensified trade winds.
E) leads to warmer than normal waters in the eastern Pacific.
D
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Which of the following is an essential characteristic of an index fossil?
A) The organism lived in a very specific environment or two, such as tropical volcanic islands. B) The organism lived for a very limited period of geologic time. C) The fossils of the organism are exceptionally well preserved. D) The organism lived on the land, not in the ocean.
Tornadoes generally form ____ of a thunderstorm cloud
a. at the trailing edge b. in the center c. at the leading edge d. at the windward edge e. at the leeward edge
Overpumping groundwater in coastal areas can cause ________ to move into aquifers, making the water undrinkable
A) untreated sewage B) hard water ions C) VOCs D) saltwater E) suspended solids
The bouning of wind blown sediemnt
a. Saltation b. Salutation c. Solifluction d. Aboration