The primary occurrence of the rock-forming minerals olivine, pyroxene, and amphibole is:
a. igneous rocks.
b. metamorphic rocks.
c. sedimentary rocks.
d. A and B
e. all rock types
D
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Which of the following is characteristic of oceanic-oceanic convergent plate boundaries?
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Chlorofluorocarbons are compounds that were not appreciably present in the atmosphere before 1950 and have a significant role in catalyzing decomposition of stratospheric ozone
Indicate whether the statement is true or false
What type of metamorphism would occur in this setting?
A. normal faulting B. extension C. contact metamorphism D. regional metamorphism
What circumstance would decrease the likelihood of a couple having a child?
A. the use of children as an essential part of the family labor force B. lack of contraceptive availability C. opportunities for women to participate in education and employment D. the lack of a public or private pension system E. high infant mortality rates