Answer:
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.
The answer is letter C.
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Most common cases of poisoning occur at
home while others through occupational and environmental exposures. Its
symptoms vary depending on the type of poison, length of exposure, quantity of
poison, and the age of a person involved. If someone is experiencing symptoms
of poisoning (e.g. dizziness, vomiting, trouble breathing) it is always best to
contact a Poison Control Center immediately. These people know and have a great
dealing with different hazards and could suggest possible first aids for the poisoning.</span>
The thyroid hormones—specific thyroxine (T4) and triiodothyronine (T3) hormones—from the thyroid gland.
