DNA helps scientists to better classify organisms is because each organ has a specific kind of DNA. For an example, brains and hearts have many small types of RNA. So if a scientists see some RNA they know that its a heart or a brain.
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Answer:
I don't know the rest but I can define ABNORMAL BEHAVIOR
Explanation:
Abnormal behavior is defined as behavior that is deviant, maladaptive, and/or personally distressful.
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Check to see if the person is conscious, and check vital signs. And if so ask if you can help them. Have someone call 911. Make sure that the airway is clear. Perform CPR and rescue breaths, checking to any changes in vital signs.
