The Russian region that is rich in resources and was the destination of many Russian people during Soviet times so that the local ethnic groups were outnumbered is
A. North Caucasus
B. North European and Middle Volga
C. Siberia and the Far East
D. Territories of the Far North
D. Territories of the Far North
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Most substances ________ in density as they begin to freeze. However, as the temperature of pure water reaches 4oC it ________ in density, and as it freezes it ________ in density
a. increase; increases; decreases b. decrease; decreases; decreases c. decrease; decreases; increases d. increase; increases; increases
The type of tide associated with the full and new moons are ____
A) neap tides B) spring tides C) diurnal tides D) tidal currents
Pluto was discovered in 1930, becoming the 9th planet in the solar system. As telescopes improved, other Sun-orbiting objects were discovered. Some of those were even larger than Pluto. By 2005, it was becoming apparent that many more objects would soon be discovered and that the number of planets in the Solar System could swell to as many as 50. After much debate, scientists in the International Astronomical Union (IAU) concluded that Pluto and the other similar celestial bodies orbiting the Sun should be classified as "dwarf" planets. Since a "planet" must clear the space surrounding its orbit, our Solar system now has 8 planets.Why weren't the other Pluto-like objects discovered earlier?
A. Scientific explanations make predictions. B. Science is limited by technology. C. Scientific explanations are tentative. D. Scientific hypotheses are falsifiable.
Probably the single most characteristic feature of sedimentary rocks is ________
Fill in the blank(s) with correct word