A rock with segregated light and dark bands, containing the minerals quartz, feldspar, hornblende, and
mica, is a(n) ____________________ gneiss. Fill in the blank(s) with the appropriate word(s).
high-grade
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Bolivia is the only country in Latin America with a majority (55%) ________ population
A) indigenous B) African C) Asian D) mestizo
Among layers of the soil horizon, the one with the most organic material is ________
A) O B) A C) B D) C E) R
A parcel of air with an initial temperature of 55°F begins to rise in Location A. The LCL of the parcel is 2000 feet. With a red (or labeled) line, carefully draw the temperature decrease of this parcel of air as it rises to 8000 feet. Be sure to consider the LCL, and the DAR and SAR.
(a) Describe the stability pattern of this parcel of air.
(b) What is the general name for the change observed in the vertical temperature profile between 2000 and 3000 feet?
(c) Does the parcel of rising air become highly stable or highly unstable between 2000 and 3000 feet? Why?
Because the early Earth was a large sphere of magma, the earliest rocks that formed here were recycled into the mantle long ago. What is the age of the oldest radiometrically dated rocks discovered on the planet?
(Or, what is the age of the oldest remaining rocks on Earth?) A) 6,000 years old B) 4.6 million years old C) 4 billion years old D) 4.6 billion years old