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

Environmental & Atmospheric Sciences

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A) low air temperature B) high air temperature C) low air pressure D) high air pressure

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The fossil record shows no significant change in terms of the diversity of organisms through

time. Indicate whether the statement is true or false.

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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.

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Scientists use ________ to forecast climate change

A) CO2 concentrations B) political mandate C) statistics D) computer simulation models E) historical data

Environmental & Atmospheric Sciences