Basalt is a variety of gabbro.
Answer the following statement true (T) or false (F)
True
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The very common mineral shown in this photograph is light colored, transparent, has a hardness of seven, and fractures rather than cleaves. It does not effervesce. What mineral is it? 
A. biotite B. garnet C. feldspar D. muscovite E. quartz
What are the two primary ways the author reviews as broad categories to address energy challenges? Give examples.
What will be an ideal response?
Which of the following is not a primary factor contributing to sea-level rise?
A) melting of glaciers B) melting of ice sheets C) melting of sea ice D) thermal expansion of seawater
A recent viral video entitled "How Wolves Change Rivers" argues that the reintroduction of wolves to Yellowstone after a 70 year absence led to multiple changes in the biodiversity and ecology of the park. This is an example of a(n)
A) pioneer community. B) autotroph. C) primary succession D) trophic cascade E) eutrophication