Briefly explain why felsic intrusive rocks are actually more common than mafic intrusive rocks What will be an ideal response?


Partial melting of mafic oceanic rocks and silica-rich sediments yields magmas richer in silica than the
original magma. Also, assimilation of continental crust into the magma raises the silica values.

Environmental & Atmospheric Sciences

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A process known as ____________________ is used to convert solid coal into synthetic natural gas, removing sulfur and other impurities.

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

The cloud of gas and debris from which stars are formed is called

a) accretion b) nuclear fusion c) nuclear fission d) nebula e) supernova

Environmental & Atmospheric Sciences

Venus and Earth have ________ surfaces and atmospheres.

A. very dissimilar B. slight differences in C. very similar

Environmental & Atmospheric Sciences

variation in the relative frequency of different genotypes in a small population, owning to the chance disappearance of particular genes as individuals die or do not reproduce

What will be an ideal response?

Environmental & Atmospheric Sciences