How is a technical civilization defined?
A) a civilization that can avoid self-destruction for long periods
B) a civilization that can communicate over interstellar distances
C) a civilization that has the ability to store and process information
D) a civilization that has developed interplanetary space travel
E) a civilization that can construct tools out of raw materials
B
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Which of the following would be the least conductive?
a. Copper b. Salt water c. Glass d. Mercury
A moon whose surface is smooth, with no craters, is probably ________
Fill in the blank(s) with correct word
The surface of the terrestrial planet ______________ cannot be seen from Earth
Fill in the blank(s) with correct word
A characteristic of a glacier is
a) meandering. b) a U-shaped channel cut deep into mountain valleys. c) V-shaped valleys between mountains. d) inability to move large rocks.