The flu vaccine changes every year. The flu vaccine is based on a predicted strain that is anticipated to be the most infectious that year. Thats why people who sometimes get the vaccination still get the flu, they don't have the antibodies for the strain they were infected with. Strains for viral disease don't change very much and usually the vaccination for them cover them well.

6 0

2 years ago

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Which is an example of a biotic factor A water B rocks C) soil D) trees

Irina-Kira [14]

Answer:

d trees

Explanation:

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2 years ago

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Explain the stages involved in testing a piece of onion for reducing sugar

Gre4nikov [31]

Explanation:

Reducing sugars are simple sugars with the ability to reduce copper (II) ions to copper (I). All monosaccharides (fructose, glucose, galactose) are reducing sugars as are some disaccharides, such as lactose and maltose. Simple sugars are all carbohydrates, and are used by the body as a source of energy.

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3 0

2 years ago

SOMEONE HELP MEEEEEEEEE PLEASEE

ValentinkaMS [17]

Answer:

i dont know but you pfp bad ;/

Explanation:

3 0

3 years ago