<span>D. They have to predict which strains of flu will become active months before the flu season begins.
The text states, "</span>Creating a flu vaccine is a bit of a guessing game, because the shots take months to manufacture. Each year in February, the World Health Organization (WHO) tries to predict<span> what viruses may be circulating the following winter, a process that can change as bugs mutate. " This supports the answer that a challenge for vaccine makers is determining which strain of the flu must be targeted in order to prevent its spread. </span>
Answer:
Thronton dies from a gunshot wound
Explanation:
For he thinks that this kind of friendship can exist only when one spends a great deal of time with the other person, participating in joint activities and engaging in mutually beneficial behavior; and one cannot cooperate on these close terms with every member of the political community.
Answer:
A. Buck is careful and methodical
Explanation:
Below is the excerpt from "The Call of the Wild:"
"The dominant primordial beast was strong in Buck, and under the fierce conditions of trail life it grew and grew. Yet it was a secret growth. His newborn cunning gave him poise and control. He was too busy adjusting himself to the new life to feel at ease, and not only did he not pick fights, but he avoided them whenever possible. A certain deliberateness characterized his attitude. He was not prone to rashness and precipitate action; and in the bitter hatred between him and Spitz he betrayed no impatience, shunned all offensive acts."
From the above excerpt, we can infer that Buck is careful and methodical. He doesn't pick on fights but rather avoided them. Also, he comported himself and endeavoured to avoid offensive acts. Furthermore, he was not prone to rashness.
"The Call of the Wild" is a short adventure story written by Jack London. A dog named Buck is the central character of the story. In the story, Buck is stolen from his home and was sold as a sled dog in Alaska. In the environment he finds himself, he becomes progressively feral. Such environment forces him to fight in order to survive and at the same time dominate other dogs.
