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.
The Green Revolution provided B. An increase in the yield of crops forless-developed countries.
Yes but just look it up also can someone answer my question? 10 points
ANSWER: E) connect parks in the United States and Canada with protected corridors where wildlife can travel safely.
Answer:
osbervaison and information
Explanation:
you can osbrve if a person ahs a healthy life stlye and see what they need and what they dont need information you can ask that person for more depth on what happended why they are like that what caused them to be that way if it s good or bad
if someone is coghing and you can obersev and tell that they are sick and if you ask what happedn they will tell you information then you can tell what type of cold they have. HOPES THIS HELPS IF IT DOSE THE GIVE ME AN BRAINLIEST PLS I NEVER HAD ONE.❤
