GENERAL ANATOMY
EMBRYOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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II and III only
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I, II, III, and IV
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I and IV only
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II, III, and IV only
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Detailed explanation-1: -Continental drift describes one of the earliest ways geologists thought continents moved over time. Today, the theory of continental drift has been replaced by the science of plate tectonics.
Detailed explanation-2: -However, in the 1950s, evidence began to trickle in, making continental drift more viable. By the 1960s, there was enough evidence supporting Wegener’s missing mechanism, seafloor spreading, allowing continental drift’s hypothesis to develop into the Theory of Plate Tectonics.
Detailed explanation-3: -How did Wegener use climate clues to support his hypothesis of continental drift? Wegener used continental drift to explain evidence of changing climates. For example, fossils of warm-weather plants were found in the Arctic Ocean, and glaciers were found in warm areas, such as Africa.
Detailed explanation-4: -Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek. He suggested that Pangaea broke up long ago and that the continents then moved to their current positions. He called his hypothesis continental drift.