Based on this passage, which statements are true about air bags? Check all that apply. A driver who is not wearing a seat belt may be injured by an air bag.
Air bags protect front-seat occupants in head-on crashes.
Air bags expand slowly from the steering wheel or dashboard.
Air bags are most effective when passengers sit as close to the dashboard as possible.
Air bags are meant to work with seat belts, not to replace them.

In 2009, a flu pandemic was believed to have originated when viral transmission occurred from pig to human, thereby earning the designation, "swine flu." although pigs are thought to have been the breeding ground for the 2009 virus, sequences from bird, pig, and human viruses were all found within this newly identified virus. what is the most likely explanation of why this virus contained sequences from bird, pig, and human viruses? a) the virus was descended from a common ancestor of bird, pig, and human flu viruses.b) the infected individuals happened to be infected with all three virus types.c) related viruses can undergo genetic recombination if the rna genomes mix and match during viral assembly.d) the human was likely infected with various bacterial strains that contained all three rna viruses.