Fossils are:a
useful for reconstructing past environmental conditions.
b. evidence that evolution has occurred.
c. evidence that Earth has a long history predating humans.
d. the remains or traces of once-living organisms.
e. all of these
E
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What is the main reason why the age of oldest rocks can vary from one part of a continent to another?
A. Large parts of the continent are subducted deep within the mantle. B. Older rocks are commonly remelted over huge regions. C. Older rocks have been uplifted and eroded away. D. Parts of the continent have been added by the accretion of tectonic terranes.
What kind of fault is illustrated in this figure?
A) normal fault B) reverse fault C) thrust fault D) strike-slip fault
____ are a type of lithostratigraphic unit with distinctive upper and lower boundaries
A)Biozones B)Stratotypes C)Formations D)Systems E)Zones
Electricity from nuclear power plants is produced via ________
A) the fission of uranium or plutonium atoms by bombarding them with neutrons B) the fusion of electrons by bombarding them with uranium or plutonium atoms C) bombarding radioactive elements with electrons D) the fusion of nuclei of atoms