What caused virtually all of canada and some of the northern us to be once covered by thick glacial ice almost 15,000 years ago? question 4 options: changes in the earth's climate caused the ice sheets to grow. changes in the orbit of the earth caused the ice sheets to spread across canada. the ice sheets were widespread because they were prevalent all around the world. there is no apparent reason why the glacial ice was present. save

Based on your knowledge of industrialization, which of the following statements best describes what is happening in this photo taken in the us around 1910? a. the children pictured here likely worked a 4 - 6-hour shift after school, five days a week, for minimum wage. b. the children pictured here are working illegally, as child labor was prohibited in the late 1880s. the children pictured here likely worked a 12-hour day, six days a week, for about one dollar a week d. the children pictured here likely earned good wages, were protected from risk of injury, and were likely to have a successful, long-term career in this industry.