Discuss how Bowen's reaction series helps explain the composition of many igneous rocks
Some minerals occur together in igneous rocks but others do not. Bowen's observations and laboratory experiments demonstrated that as molten material cools, there is a predictable sequence in which specific minerals crystallize, rather than all crystallizing simultaneously. Therefore, minerals having similar melting points will tend to crystallize together and minerals with very different melting points will not.
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In their studies of the formation and evolution of human customs and beliefs, ethologists study people's sense of
A) ethics.
B) ethnicity.
C) territoriality.
D) space.
E) landscape.
Hokkaido island is about the same latitude as the state of ________
A) Alaska B) Hawaii C) Georgia D) New York
Volcanic ash typically remains in the stratosphere for over a year
Indicate whether the statement is true or false
Which of the following is not a scientific hypothesis for how life began?
a. Outgassing and related volcanic materials brought proto amino acids to the surface of the earth. b. Methane and hydrogen sulfide from deep-sea hydrothermal vents and hot springs like those at Yellowstone National Park provided the necessary materials. c. Methane and ammonia in the early atmosphere combined with the help of lightning or ultraviolet light to produce the first amino acids. d. Asteroids and comets brought amino acids to Earth.