1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andrei [34K]
2 years ago
9

Why must a new flu vaccine be manufactured annually?

Chemistry
1 answer:
mafiozo [28]2 years ago
7 0

Answer:

D or A

<em>But I do know...</em>

It's because new strains of the virus are constantly appearing and evolving, so the vaccine must change along with them.

You might be interested in
Which one of the following is an example of a monosaccharide?
Andre45 [30]
Glucose is the major example of monosacchrides 
succrose is an example of disaccharide
and both starch and cellulose are examples of polysaccharides
hope that helps :)
3 0
4 years ago
Read 2 more answers
Can someone help pls! I’m very confused on this!!
Klio2033 [76]
1. 160,000
2. 160,00
You just have to multiply the volume and the buffer.
6 0
3 years ago
How many carbon atoms are in the following molecule of isobutane? (ch3)3ch
wariber [46]
The subscript 3 outside of the parentheses means to multiply everything in the parentheses by 3, so it becomes a matter of addition:
3*(CH3) * (1 carbon atom)/(CH3) = 3 carbon atoms in (CH3)3
CH has one carbon atom and one hydrogen atom, so:
1 carbon atom in CH
Add both of them together, and you get 4 carbon atoms in isobutane
3 0
3 years ago
How to do this science homework
Rus_ich [418]
What is the question?
5 0
3 years ago
Read 2 more answers
Which of the following excerpts from the story does NOT help create suspense?
Orlov [11]
The correct answer will be b
4 0
3 years ago
Other questions:
  • A student performs an experiment to find the percentage of water in a hydrate. He determines that the hydrate contains 22% water
    5·1 answer
  • What is the alcohol in this?
    7·1 answer
  • Suppose Rutherford has not seen any alpha particles deflected back from the gold foil how would this mostly likely have affected
    8·1 answer
  • Best example of potential energy?
    9·2 answers
  • Which is the lowest energy level having “d” orbitals?
    13·1 answer
  • Write a net ionic equation for the neutralization reaction of acid with a hydroxide base. (Include phase symbols)
    11·1 answer
  • 3CaCl2 + 2AlF3 --&gt; 3CaF2 + 2AlCl3
    10·1 answer
  • In a mixture of He, Ne, and Kr the total pressure is 125 kPa. The partial
    15·1 answer
  • 226<br> ) Which equation represents the radioactive decay of Ra?<br> 88
    15·2 answers
  • 2) Phenolphthalein (C20H1404) is a dye very commonly used as indicator in acid-base titrations. The simplified
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!