Which of the following reasons explain why felsic or intermediate lavas tend to erupt explosively?
a. Because it contains less silica bonds
b. Because gases held between tetrahedral
c. Because it contains high silica bonds
d. Both b and c
e. Both a and b
Answer: d. Both b and c
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Stewardship is based on the idea that nature exists for all species alike and our success depends on how well we manage the earth.
Answer the following statement true (T) or false (F)
Which of the following best matches the description?Layer of soil and rock that covers deposits of desirable minerals.
A. active solar system B. liquefied natural gas C. underground mining D. overburden E. acid mine drainage F. surface mining G. resources H. reserves I. black lung disease J. renewable energy sources K. nonrenewable energy sources L. geothermal energy M. secondary recovery N. photovoltaic cell O. passive solar system
The most essential compound needed to sustain life as we know it is ________
A) ozone B) carbon dioxide C) oxygen D) carbohydrates E) water
Which of the following drainage patterns results when streams from all directions converge into a basin?
A) Radial B) Centripetal C) Annular D) Trellis E) Dendritic