How are oxygen isotopes used to determine ancient climate? What will be an ideal response?
The light isotope of oxygen, oxygen 16, vaporizes more readily than the heavy isotope, oxygen 18. As
climate warms, evaporation increases and the ratio of O-18 to O-16 becomes higher.
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If uplift of the land occurs, a wave cut platform may become a new ________
Fill in the blank(s) with the appropriate word(s).
The eastern United States falls under which of the following terrestrial biomes?
A) midlatitude grasslands B) temperate rain forest C) mid-latitude broadleaf and mixed forest D) needleleaf forest
Dating back to approximately 6000 BCE, we can judge that
A) fairly accurate navigational maps could only be produced after the start of the Industrial Revolution. B) the first "true" maps appeared because of modern printing presses in the twentieth century. C) sailors during the European Renaissance had paper maps that were far more useful to them than were the "stick charts" possessed by Polynesian sailors and fishers. D) maps have appeared in many forms in different societies and times, including modern paper maps, GPS in cars, and the urban maps of ancient Turkey. E) maps that distort the sizes of Greenland and Antarctica are generally the best, although they make Africa and South America appear too small while simultaneously expanding the size of Europe.
Late successional plants are largely unaffected by plants at earlier stages of succession because they are not in direct competition for resources, a factor called ____.
A. facilitation B. imperturbability C. inhibition D. tolerance E. intolerance