A concussion, which is a form of mild traumatic brain injury, occurs after a blow to the head. The brain is surrounded by fluid and protective membranes called meninges, which usually cushion the brain. During an impact, the brain is pushed against the inside of the skull and can be bruised.
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Answer:
liquid phase
Explanation:
it is liquid phase because molecules are not that tightly packed as solid and not that far away from each other as in gas phase.
No,
To emit light an electron has to jump down to a lower energy level but in an electron is unable to go any lower in ground state.
