The Principle of Uniformitarianism is based on the idea that modern processes have operated throughout geologic time.
a. true
b. false
a. true
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Echinoderms and chordates are thought to be related because ____
a. both have embryonic cells with spiral cleavage
b. both have embryonic cells with radial cleavage c. both have amniote eggs d. they lived at the same time e. both have embryonic cells with nested cleavage
If huge waves pound against the beach communities of Southern California for several days during clear, calm weather, it is a good bet that
a. ?the winds are strong somewhere out over the Pacific Ocean. b. ?an earthquake has occurred somewhere on the ocean floor. c. ?it is raining offshore. d. ?it is a period of high tides. e. ?there is a large difference in water density between the shoreline of Southern California and the middle of the Pacific.
A population density map of the world shows that the distribution of people is most obviously affected by
A) environmental factors such as natural resources, climate, water availability, topography. B) political factors, types of government, and laws. C) cultural factors such as language, cuisine and religion. D) preferences for places with tropical landscapes. E) economic factors such as development and trade history.
One half of the atmosphere is below ________
A) 3.5 km (2.1 miles) B) 1 km (0.6 miles) C) 7.2 km (4.3 miles) D) 10 km (6 miles) E) 5.6 km (3.5 miles)