When considering evidence of glaciation on the southern continents, why did Wegener reject the explanation that the entire planet had experienced a period of extreme cooling?
A) Because the glacial debris was localized to a few small mountain valleys
B) Because he knew the "glacial debris" was actually a misinterpreted landslide
C) Because geologic evidence supported the existence of tropical swamps in the Northern Hemisphere
D) Because the 16O/18O ratios in fossils supported an ice-free period
Answer: C
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Which of the following statements concerning pterosaurs or their innovations is FALSE?
a. Although a separate line, the pterosaurs were part of a much larger radiation of reptile lines that included dinosaurs. b. Among the many innovations that pterosaurs had for flight, were hollow, strut-supported bones that lightened their skeletons. c. Although pterosaurs could fly, they were poorly designed for flight and were quickly replaced when better-flying birds arose d. Casts of pterosaur brains show that their brain design was similar to that of birds and modified for 3-dimensional flight. e. Most of the pterosaurs that we have fossils from were adapted for life in coastal areas, but they probably lived in other areas as well.
How is coal produced?
A) with natural gas B) the same way oil is produced C) Obsidian and water are mixed together and buried for hundreds of years. D) Plant organic matter is compressed into rock under elevated heat and pressure during burial.
Briefly explain how deep trenches form
What will be an ideal response?
Fish appeared before amphibians on the geologic time scale.
Indicate whether the statement is true or false