According to the map above, which language family is most commonly used in the country of China? A. Indo-European
B. Afro-Asiatic
C. Sino-Tibetan
D. Altaic

Which process is a source of outdoor air pollution? check all that apply. burning gasoline at a refinery releasing fumes at a chemical plant emitting particles from a dump truck releasing radon gas from a generator emitting carbon monoxide from a heater