Answer: B
Explanation: it’s the only career lol
The physical characteristics of influenza viruses are that they are single-stranded, RNA viruses enclosed in a helical nucleocapsid. On the outside, these viruses are enveloped. Two important proteins are found on surface of this envelope: hemagglutinin and neurominidase.
Answer:
C.
20 minutes a day, two days out of the week
Explanation:
i took the test
