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.
In our community the ecosystem provides fresh drinking water via pipes called citywater or ground water. It should be protected well, because it is our cities only source of clean water, ''purified''.
Nitrogen Fixation. Good luck :)
Answer:
It's good to give healthy food to your body.
Explanation:
Hope this helps
-A Helping Friend (mark brainliest pls)
<span>C. Frogs will have brain damage if exposed to both brown sugar and regular sugar.</span>
