A vaccine is a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins.
Explanation:
Bruno should
Try to spend some time outdoors every day.
Plan his physical activity for earlier in the day, not right before he goes to bed.
Stay away from caffeine (including coffee, tea, and soda) late in the day.
If he has trouble sleeping at night, limit daytime naps to 20 minutes or less.
Answer:
B. 24 hrs
Explanation:
it actually depends- some people can come back within 48 hrs and some 24 hrs.- it depends on how bad.
