A concussion is a brain injury caused by a blow to the head or a violent shaking of the head or body.
There are many symptoms of a concussion but common symptoms include headaches, confusion, lack of coordination, memory loss, dizziness, excessive fatigue, etc.
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Your answer would be A. 3 days.
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Answer:
identify four characteristics of a nation:
The nation is a living organ that has hereditary external features, expressed in a common language, culture, territory and traditions, matured over a long historical process
Explanation: