American Football, look out for the answers to these questions. How many yards is a football field in length?
What is a "Fair Catch" during the kickoff return?
Which offensive player is responsible for "snapping" the football to initiate the play?
List 3 things that you have learned about football from these provided sources.

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants