Recent global warming has been caused by human production of greenhouse gasses
a. True
b. False
Indicate whether the statement is true or false
True
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The Big Rip refers to the
A. possibility that galactic centers may suddenly disappear causing galactic disintegration. B. phenomenon of dark energy decelerating, causing all matter to disintegrate. C. accelerating influence of dark energy, causing all matter to become completely ripped apart. D. phenomenon of dark energy causing the universe to rip into two or more spacetimes.
Of Earth's four overlapping spheres, which of the following does not involve material above Earth's surface?
a) atmosphere b) lithosphere c) biosphere d) hydrosphere
Most folding of rocks occurs near the surface. Indicate whether the statement is true or false
What were some of the contributions of African Americans and migrants from Mexico and the Dust Bowl to the economic and cultural histories of California?
What will be an ideal response?