According to the theory of isostasy, the crust:
a. tends to establish a uniform elevation over the entire earth
b. tends to establish an elevation directly proportional to its density
c. tends to establish an elevation inversely proportional to its density
d. is fixed and cannot change in elevation
c
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When the current in a lamp is increased, the lamp glows
A. as before. B. dimmer. C. brighter. D. none of the above
In the 19th century, the geologic time scale was first developed using radiometric age dating techniques.
a. true b. false
Which of the following are the reactants (ingredients) needed for photosynthesis to occur?
A) carbon dioxide, water, and sunlight energy B)sunlight, plants, and oxygen C) glucose, oxygen, and sunlight energy D) plant seeds, water, and soil
________ is a measure of the particle size a stream can transport
A) Gradient B) Equilibrium C) Force D) Competence E) Capacity