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.
Answer:
The answer to Part A would be Ignorant, as the author goes on to state that his youthful understanding had struggled in vain. If someone is ignorant of something, yet they do not take the time to actually go research or learn about that thing, then they would be struggling in vain because they are selfish and not taking time to research what it is that the other person is saying that they do not understand.
For the answer to Part B, I would say that (Frederick) Douglass' new awareness of how owners maintain control over slaves allows him to better understand how to improve his situation. I say this because he seems to have an awakening/epiphany in the very last line: "I now understood what had been to me a most perplexing difficulty".
Explanation:
I hope this helps!
Answer:
in my opinion,i think for A its B and for B its C
Explanation:
no idea pls dont come at me,thank you
