________ are sedimentary rocks deposited by direct precipitation of minerals from water.
A. Biologic rocks
B. Aquatic rocks
C. Chemical rocks
D. Clastic rocks
E. Hydro rocks
Answer: C
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Which of the following is not a natural factor that helps reduce air pollution?
a. Wind b. chemical reactions c. salty spray from the oceans d. a sunny, warm, and dry climate e. rain and snow
Which of the following best matches the description?Naturally occurring substances that can be extracted under current conditions.
A. surface mining B. nonrenewable energy sources C. renewable energy sources D. resources E. reserves F. acid mine drainage G. underground mining H. black lung disease I. passive solar system J. photovoltaic cell K. overburden L. secondary recovery M. geothermal energy N. active solar system O. liquefied natural gas
Standard provisions of structural adjustment programs include all of the following
a) reduction of education and public services. b) increased subsidies. c) liberalization of trade. d) emphasis on export crops.
Surface seismic waves originate at the epicenter of an earthquake.
Answer the following statement true (T) or false (F)