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Question
Figure 9.2 a) Source: Data from Raup, D. M., and J. J. Sepkoski (1982), Mass extinctions in the marine fossil record. Science 215: 1501-1503.
Figure 9.2 b) Percentages of each group that have become extinct or endangered during the past 500 years(left side) compared to the species-loss marking "Big Five" mass extinctions (bottom right). The white icons show species that are Extinct or Extinct in the Wild. The black icons add groups that are Threatened. The arrows indicate cases where the assessments may be either inflated or underestimated.
Source: From Barnosky et al. (2001), Has the Earth's sixth mass extinction already arrived? Nature, 471: 51.
Use Figure 9.2 a) and 9.2 b) to answer the following questions.
Refer to Figure 9.2. a). Which of the five major extinctions was the largest?
A) Ordovician
B) Devonian
C) Permo-Triasic
D) End-Triasic
E) Cretaceous-Tertiary
Answer
This answer is hidden. It contains 1 characters.
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