The greatest cause of the worldwide loss of species is ________
A) anthropogenic activities
B) water pollution
C) air pollution
D) decreased soil nutrients
E) habitat destruction
E
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The scientific process and scientific knowledge are based on
A. observation alone B. a systematic process of learning about and testing our understanding of the world C. the fact that all hypotheses can be proven true D. quantitative data alone
Which of the following statements regarding sea-level is false?
A) Sea level is a convenient reference position because it is constant. B) The edges of continents submerged today were dry land at times in the past. C) Marine sedimentary rocks in present day continental interiors indicate times when continents were submerged. D) There is a connection between average lithosphere age and sea level.
Southwest Asia and Western Europe are major destinations for Muslim migrants because
A) individual government policies seek to add to their work force. B) of well-established guest worker programs. C) of educational opportunities in these countries. D) economic opportunities are better than in country of origin. E) political participation is greater than in country of origin.
Crude oil is ________
A) formed less than 100 yards below the surface; in deeper places with more pressure, coal is formed B) refined to separate the chemicals used for gasoline, lubricants, plastics, and other products C) formed in a wide range of temperature and pressure circumstances D) composed of three different hydrocarbon molecules E) usable in its raw form