Answer: A Concussion is when you add violent movement to the brain, this causes the brain to move inside the head and bump against the skull. As a result, neurons are damaged and the brain may bruise at the site of impact.
cause: A Concussion is caused by a blow to the head or a violent shaking of the head and body.
I'm only is 7th grade so i hope this helps! :)
Required a health warning on cigarette packages, prohibits cigarette advertisements on tv and radio, institues the 4 warning labels all listed as Surgeon General's Warnings, made domestic flights of less than 2 hours smoke-free, restricting sales to anyone under 19
Did you misspell the question??
It changed because now lots of people look at it as being "gross"
