The largest river (in terms of discharge) in the world is the Nile River.
a. true
b. false
b. false
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Protons in the nucleus of a helium atom
A. repel orbiting electrons. B. attract a pair of orbiting electrons. C. both of these D. neither of these
What geologic evidence can be found along the eastern margin of North America of the Triassic
breakup of Pangaea? What will be an ideal response?
Heat, pressure, and deformation are processes that can create
A. sedimentary rocks. B. igneous rocks. C. metamorphic rocks.
Polar regions receive nearly continuous sunlight in the summer months so why doesn't the mean temperature during those months get above 10°C?
A) The reflection of the sun's energy (albedo) by the ice and snow prevents the area from warming. B) The sun's energy has to heat the frozen atmosphere in order to reach the land and that takes all summer. C) In the summer, the winds blow from the cold oceans and keep the temperatures low. D) The sun is too low in the sky to be an effective heat source. E) The ozone layer has thinned significantly over the polar regions and this prevents heat from being trapped near the surface in those areas.