1) A ___ is a non-living infectious particle. The different varieties of flu viruses
are called __.
The Spanish flu outbreak occurred in ___. The
determines which strains of influenza virus will most
likely be those that are the most active during the flu season. An_
is a part
of the viral, coating that the immune system recognizes.
flu shots contain
antigens from three strains of flu virus.

“skateboarding is a sport combining grace, courage and skill, and here we see it being born.” based on this passage, what inference can you make about the author’s opinion of skateboarding? a. the author does not think skateboarding is a ‘real’ sport. c. the author feels skateboarding should be illegal. b. the author feels skateboarding is only appealing to very young children. d. the author respects and appreciates skateboarding as a sport.