For an animal to be extinct none more of that specific species must exist on Earth. This makes it impossible for that species to come back to life.
Answer:
A.Radiation is the answer
The next thing for the nurse to do is to write down the normal breath sound in the patient's record. Soft, low pitched sound over the base of the lungs indicate normal breathing. The sound heard will be different if the lungs are infected. Thus, the lungs of the patient been examined is working perfectly; this should be documented in the patient's record.
