Volcanic island chains forms over hot spots when the
A) hot spot travels.
B) tectonic plate carrying the volcanoes travels over the stationary hot spot.
C) hot spot expands.
D) all of these
B
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Archean continental masses were smaller but of the same configuration as those of the modern world. Indicate whether the statement is true or false
Which amino acids are precursors of norepinephrine and epinephrine?
A) aspartic acid and glutamic acid B) cysteine and methionine C) isoleucine and leucine D) phenylalanine and tyrosine
Which of the following is a real-world example of isostatic adjustment?
A) Continental margin of North America extending to create a forearc basin in California B) African continent bulging upward when moving over a mantle plume C) Downwarping of the continent in Illinois due to subduction of slabs of oceanic lithosphere D) Rebound of the landmass around Hudson Bay after glacial ice sheets have retreated
The reason scientists believe the reflective bright nebulae contain more heavy materials than the emission bright nebulae is that ________
A) they are dimmer than a low density source could produce B) they are blue, and that color is associated with carbon C) they reflect more colors than the emission nebulae D) they glow brighter than an energy emission source could produce E) they are brighter than a low density source could produce