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.
Answer: Mass = Volume x Density
<span>the variety of life in the world or in a particular habitat or ecosystem.
examples would be like a group of animals living on a farm or a family in a house.
but if ur meaning "megadiverse" would be like humans inhabiting the earth. or the ocean full of marine life</span>
First the cytoplasm then the mitochondria <span />
