Which of the following is an economically important sedimentary rock?
A) pumice B) marble C) calcite D) coal
D
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What is the principal social impact of mining operations?
A) death of workers in mining accidents B) boom and bust cycles that impact local economies and social structure C) effects of soil and water degradation on public health D) crime rates among poorly paid miners
Glacial Lake Agassiz went through many periods of catastrophic drainage starting at 13,000 years ago. Some of these periods of catastrophic change have been linked to periods of cooling climate,
particularly when the lake drained through the St. Lawrence Seaway and into the North Atlantic. How would the drainage of Lake Agassiz affect the climate to such a degree that cooling would result? What will be an ideal response?
Which of the following has been indicated as a cause of spontaneous abortions in sea lions and the death of shrimp in Escambia Bay, Florida?
A) DDT B) Methyl mercury C) PCBs D) Polycyclic aromatic hydrocarbons E) Sewage sludge
Briefly state why cat litter is a problem for sea otters
What will be an ideal response