A newborn baby has approximately 305 bones because a baby skeleton is mostly cartilage. As a person grows up, most of this cartilage turns into bone in a process called ossification. By the time they grow up, they have only 206.
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How long does the essay have to be
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Turn off the source of electricity if possible. ...
Begin CPR if the person shows no signs of circulation, such as breathing, coughing or movement.
Try to prevent the injured person from becoming chilled.
Apply a bandage.
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Vaccines have been around since 1796 preventing people from diseases and decreasing death rates. I believe due to the modern vaccines and medicine people have been living longer than life expectancies in the 1700's and 1800’s, which was between 30 and 40 years. Vaccines train the human body to recognize viruses or bacteria and the antigens (molecule capable of inducing an immune response) will start attacking the virus or bacteria before it tries to spread and cause sickness once it is has recognized it. However, vaccines are not always 100% safe because they can come with side effects. For example, the Hepatitis B vaccine had a severe allergic reaction, called anaphylaxis which caused difficulty breathing, dizziness, and skin rashes for a few people.
