All scientific investigations are initially founded upon
A) good observations.
B) good experiments.
C) multiple hypotheses, some of which are unanswerable.
D) an already accepted theory.
A
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The Prime Meridian
A) is essentially a latitude line. B) passes through Greenwich, England. C) forms an angle of 0 degrees with the earth's equator. D) was established by the Greeks.
The concentration of Silicate in the deep water of the Pacific Ocean is greater than that in the deep water of the Atlantic Ocean.
a. true b. false
Biosphere describes the earth realm where life occurs What describes the entire solid earth realm and is composed of mineral matter?
a. Species b. Ecosystem c. Population d. Lithosphere e. Community
Scientists today believe that the movement of lithospheric plates is caused by:
a. gravitational attraction between Earth and the moon. b. convection currents in the mantle. c. Earth's revolution around the sun. d. the rapid shrinking of Earth's interior. e. polarity reversals.