Which of the following minerals does not belong to the DISCONTINUOUS branch of the Bowen's reaction series?
a) Olivine
b) Pyroxene
c) Amphibole
d) Plagioclase feldspar
e) Biotite
Ans: d) Plagioclase feldspar
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Hurricanes coincide with areas of extremely ________
A) low air temperature B) high air temperature C) low air pressure D) high air pressure
The fossil record shows no significant change in terms of the diversity of organisms through
time. Indicate whether the statement is true or false.
Rock falls
A. cause the "nick point" in a stream to migrate downstream with time. B. occur only on mountain sides in dry climates. C. are unaffected by waves slamming against the base of a sea cliff. D. occur on any steep-faced cliff, including under waterfalls.
Scientists use ________ to forecast climate change
A) CO2 concentrations B) political mandate C) statistics D) computer simulation models E) historical data