The most notable trace in the geologic record of human activities is likely to be a(n) ____
a. more diverse pollen record
b. concrete and metal debris field left from cities
c. expansion of farmland
d. increase in carbon dioxide levels, as recorded by ice cores
e. more alkaline ocean
d
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Cepheids are types of stars that regularly change how bright they are over a period of a few
A. days. B. decades. C. year. D. months.
Discuss the environmental degradation and poverty that is prevalent in Haiti. Be certain to emphasize the historical factors that have led to this situation in the country
What will be an ideal response?
The Aral Sea is shrinking due to ________
A) saltwater intrusion B) subsidence C) a large number of dams D) diversion of the rivers that flow into it E) overdrawing the aquifer it is located upon
Which of the following is the estimate of the total value of everything produced by a country in a particular year?
A) gross domestic product B) gross national income C) purchasing power parity D) trade deficit E) human development index