Grade II Concussion
The brain is made of soft tissue. It's cushioned by spinal fluid and encased in the protective shell of the skull. When you sustain a concussion, the impact can jolt your brain. Sometimes, it literally causes it to move around in your head. Traumatic brain injuries can cause bruising, damage to the blood vessels, and injury to the nerves.
<span>The instructions for the organization and metabolism of living things are encoded in the Genes.All cells have a copy of the hereditary material, DNA. The theory that accounts for the differences that divide and the unity that joins all living things is the evolution theory.</span>
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I am sorry I can only answer 7 for you.
Hope it helps
7= By replacing the neurons lost from a injury with new cells.
They do that so when a shark eats something and crumbs come out of its mouth it eats the crumbs
