An age-dependency ratio of 100 means that the working-age population is larger than the age-dependent population.
a. true
b. false
b. false
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Earthquake P-waves are most like
A. water waves because they have crests and troughs. B. vibrations in a string because they vibrate perpendicularly to the direction of travel. C. sound waves because they are longitudinal. D. light waves because they are transverse.
A ball is tossed upward at 50° to the horizontal. While rising its horizontal component of velocity
A. decreases. B. increases. C. remains unchanged. D. none of the above
Concerning the population geography of Europe:
A. population growth in Europe is centered in Scandinavia, where birth rates are the highest on the continent. B. most European countries have Total Fertility Rates above 4.0. C. life expectancy is declining steadily in Northern Europe and the British Isles. D. countries with significant Muslim populations have the highest population growth rates.
If you simultaneously drop a baseball and a bowling ball from your outstretched hands, they hit the floor
A. with the same force. B. with the same momentum. C. at the same speed. D. all of the above