Answer:
Scientists are creating vaccinations that prevent people from getting the bird flu. If the virus mutates, a new vaccine will need to be made. The vaccine needs to be tested, which can be dangerous. It will also take a long time for scientists to know whether the vaccine works or not.
Explanation:
The flu vaccine is injected under skin in a inactive form and the immune system responds with antibodies to the food protecting you from the future exposure to the flu. That's why sometimes you get the flu even though you got a shot because there's different forms of the flu.
Thomas Paine's images of the American Revolution that it true today because he said that the nation is composed of different nations. These nationalities are inclined to different kinds and practice of government, but are still one in creating a government on the principles of society and with the rights of men.
<h3>This is a late answer but It is C.. (I think *v*) Hope it helps <3 </h3>
Answer:
maybe becuase he has done it before or moves very fast and nimbly??
Explanation:
