The term for the two days of the year when the circle of illumination crosses the equator at right angles to provide 12 hours of daylight at every spot on the globe is ____________________

Fill in the blank(s) with correct word


equinox

Environmental & Atmospheric Sciences

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What is the most logical reason for China adopting its one-child policy?

A) The modernizing country wanted to give its women greater reproductive freedom. B) The fertility rate was too low and the country needed more people to populate vacant lands. C) It was clear that the country could not live within the limit of its resources if the population continued to grow. D) Contagious disease was rampant in the 1970s and fewer people meant less contagion.

Environmental & Atmospheric Sciences

Which pair of concepts or entities from South Africa and the United States is the best match?

A) apartheid - "Jim Crow" laws B) homelands - blockbusting C) South African Nationalist Party - U.S. Tea Party D) Nelson Mandela - white flight E) apartheid - U.S. Libertarian Party

Environmental & Atmospheric Sciences

Which of the following best matches the description?A serious effect that occurs after prolonged exposure to small doses of a toxin.

A. acute toxicity B. Superfund C. hazardous wastes D. RCRA E. National Priority List F. synergism G. corrosiveness H. toxicity I. LD50 J. CERCLA K. ignitability L. threshold levels M. reactivity N. waste minimization O. chronic toxicity

Environmental & Atmospheric Sciences

What are the most common triggering mechanisms for mass movement?

a. Earthquakes b. Excessive water from a winter snow melt or a heavy rain storm c. Deforestation d. Both a and b

Environmental & Atmospheric Sciences