Why can't we see atoms?
A) We see with light energy and the wavelength is larger than the object and so it is not reflected.
B) Atoms are invisible.
C) We cannot see things that are microscopic.
D) We see with light energy but the atoms absorb all the light and therefore there are no reflections.
E) Atoms do not interact with light energy and therefore we are unable to observe them with light.
A
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Sediment deposited by glacial meltwater is:
a. a tarn. b. better sorted than ice-contact deposits. c. tephra. d. clay. e. roche moutonnée.
Mercosur, NAFTA, and FTAA are __________-__________ associations that have globalized the Latin American economies by lowering or eliminating tariffs on goods
Fill in the blank(s) with correct word
A pidgin language
A) has no native speakers. B) is spread by folk culture. C) stems from invasion. D) cannot exist for more than a generation. E) cannot exist without globalization.
What percentage of the world's energy supplies is consumed by the U.S.?
a. 5% b. 10% c. 28% d. 75% e. 90%