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Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Which early modernism trend in art focused on prehistoric or exotic cultures? a. primitivism b. expressionism c. impressionism d. total serialism

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.