Weegy: A boundary between nonsedimentary and sedimentary rocks is an example of nonconformity. User: What's one cause of the heat island effect? O A. Pollution of groundwater • B. Higher albedo in urban areas O C. Lower albedo in urban areas O D. Reduced rainfall in urban areas Weegy: Lower albedo in urban areas is one cause of the heat island effect. User: Which process causes minerals to become concentrated in certain areas? • A. Siltation • B. Tectonic movement O C. Desalination • D. Volcanic activity Weegy: Volcanic activity is a process that causes minerals to become concentrated in certain areas. User: Which extinction event is responsible for wiping out non-avian dinosaurs? • A. The Cretaceous-Paleogene extinction • B. The Devonian extinction O C. The Silurian extinction • D. The Permian extinction Weegy: The Cretaceous-Paleogene extinction is responsible for wiping out non-avian dinosaurs. User: The soil erosion pictured here is the result of what? • A. Harvesting renewable resources at a rate lower than the sustainable yield • B. Harvesting renewable resources at a rate greater than the sustainable yield • C. The transition between geologic eras and eons O D. A mudslide caused by excessive rains (More)