When pressure differences in the western and eastern Pacific cause the trade winds to reverse it is called:
a. Southern Oscillation
b. El Niño.
c. Corriente del Niño.
d. La Niña.
a
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Describe the important aspects of atmospheric absorption, reflection, scattering, and transmission of light
What will be an ideal response?
All crystals of a mineral will have the same:
a. chemical composition (or chemical compositions that vary between fixed limits) b. angle between corresponding crystal faces c. internal structure d. all of the above
Which of the following is true?
A) Water has been discovered on no other planet. B) There is no evidence of water ever existing on Mars. C) Water occurs in significant quantities only on Earth. D) Ice has not been detected below the surface of our Moon.
Which of the following is produced by anaerobic decomposition in landfills?
A) ozone B) nitrogen oxides C) methylmercury D) carbon dioxide E) methane