The _______________ dominated global politics from the 1950s to 1990.
Fill in the blank(s) with the appropriate word(s).
Cold War
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Which of the three latitudes would receive the lowest insolation on 12/22?
If the angle of incidence (based on the solar altitude at noon) were the only factor influencing average daily insolation at the surface.
What will be an ideal response?
Environmental problems associated with wind power are:
A. transportation required of electricity over long distances is required. B. only produce electricity when the wind blows. C. vibrations causing earthquakes. D. hazardous to birds, and some people consider them to be a form of visual pollution.
Building a dam on a stream raises its ________, causing it to cease erosion and begin to deposit sediment
A) angle of repose B) aquitard C) base level D) headwaters
Which of the following describes changes in forest cover in Costa Rica since 1940?
A) Costa Rica has been regaining lost forest land since 1940, when strict forest regulations were passed and the country began serious reforestation efforts. B) Costa Rica has lost virtually all of its forests to agriculture since 1940. C) Costa Rica rapidly lost forests from 1940 until the 1980s, but its forests have more than doubled in size since then. D) Costa Rica's forests have changed dramatically in composition since 1940 because the forests have been invaded by European buckthorn and other invasive species. E) Costa Rica's forests increased in size slightly from 1940 until 1985, after which Costa Rica began rapidly losing forests because multinational coffee companies began cutting down rainforest to create coffee plantations.