What are dropstones, and what do they indicate? What will be an ideal response?
Dropstones are gravel- to boulder-sized rocks found in otherwise fine-grained glacial lake deposits.
They indicate transport of the rocks into the lake by icebergs that eventually melted, releasing the
coarser sediment
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Early towns were usually built
A. near rich farmland. B. near rivers, lakes, and oceans. C. near railway centers. D. None of these are correct.
The World Bank ________
A) regulates U.S. environmental administrative agencies B) assists U.S. corporations to circumvent foreign nations' environmental laws C) is a major source of funds for global economic development D) is a U.S. NGO that funds any project that may affect global environment E) mandates that environmental law preempt all other federal laws
Acid mine drainage can result from the oxidation of _____
a. pyrite (FeS2) b. calcium carbonate (CaCO3) c. phosphorus (P) d. nitrogen (N) e. quartz (SiO2)
Earthquake A is classified as a 3 on the Richter Scale. Earthquake B is classified as a 6. How many times more energy has Earthquake B released than Earthquake A?
A) 3 times B) 96 times C) 1,000 times D) 33,000 times