Combination of coal-burning power stations, heavy construction, booming industry and growing private car ownership has elevated the level of air pollution to unhealthy levels in which of the following cities? a. Tokyo
b. Mexico City
C. Los Angeles
d. Beijing
e. Atlanta

2pomis which of the following would be a valid hypothesis for a scientific investigation about how transportation affects food security? alcannotatiord foods purchased from the local farmers market. o b. how does the distance a food travels affect its affordability? o e foods that travel great distances cost less than foods bought o d why do local farmers markets have food with such high prices?