Answer:skateboarding
Explanation:I bang my head to cause it bleeding a year ago
Vitamin B12
When the milk's lactic acid and casein protein react, vitamin B12 is produced along with an increase in the value of other nutrients. One of the most crucial components in our diet is vitamin B12. Megaloblastic anemia, which can result from a vitamin B12 deficiency, makes its sufferers easily fatigued.
The B12 vitamin assists the body's neurological and cardiovascular systems by maintaining the health of blood and nerve cells. Additionally, it aids in the development of DNA and genetic material in each and every body cell. Additionally, it alters the DNA of the cells and causes genetic material to be malformed.
Here is another question with an answer similar to this about vitamin B12 deficiency: brainly.com/question/28214348
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There are instances
that when we are exposed to virus or bacteria, the antigen A in our body try to
fight but still we get sick, take some medication and we are then healed. Then,
another exposure to a new virus or bacteria, the antigen B reacts weakly for
our immune system do not recognized the foreign pathogen that invade the body
resulting to slight sore throat after visiting your sister at school.