The proposal that the coastline fit of South America and Africa was evidence of continental drift was criticized because it could have been due to what?
a. chance
b. shoreline erosion
c. the sinking of a land bridge
d. ocean currents
e. the distribution of resistant rock types
b. shoreline erosion
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In a cyclone, ____
a. upper air flow converges b. winds spiral clockwise in the Northern Hemisphere c. winds diverge at the surface d. pressure decreases toward the center e. pressure increases toward the center in the Southern Hemisphere
Globally, among developing regions, which of the following regions had by far the largest decrease in the number of undernourished people in the last twenty years?
A) East Asia B) South Asia C) Sub-Saharan Africa D) Latin America E) Russia
Wegener's work is a good demonstration of the scientific method because ________
A) he was right, but no one believed him B) his hypothesis passed all of the scientific testing to become a theory C) he was wrong, and as a result, no one believed him D) his hypothesis did not pass all of the scientific tests to become a theory
Which cycle has been significantly altered by humans and is of great concern because of its implications for global warming?
A) Argon B) Oxygen C) Nutrient D) Nitrogen E) Carbon