Plate tectonics emerged as a science in the 1960s, and was based on the earlier hypothesis of ________.
A. planetesimals
B. evolution
C. nebular formation
D. continental drift
E. electromagnetism
Answer: D
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Compressive forces cause the crust to
A. buckle and fold, thereby lengthening the crustal surface. B. stretch and pull, thereby shortening the crustal surface. C. buckle and fold, thereby shortening the crustal surface. D. break and fracture, thereby lengthening the crustal surface.
Polychaetes are the most successful worm phyla, being found in terrestrial, aquatic, and marine environments
Indicate whether the statement is true or false
Homologous structures probably indicate descent with modifications from a common ancestor
Indicate whether the statement is true or false
Dangerous rapid currents that can pull swimmers out to sea are called ____________________
Fill in the blank(s) with correct word