The main organ of the respiratory system is the lungs.
Answer:
false.
Explanation:
There are only nurses in nursing home's and there are only physical therapy's working in rehabs
One of the signs that sleep is necessary is that all living creatures are harmed by lack of sleep. Correct answer: A Sleep serves important evolutionary functions for all animals, because sleep helps animals consolidate memories and learn. Animals sleep according to how much they eat – animals that eat food with a lower caloric density sleep less than others. However, lack of sleep and if the deprivation is long enough it can kill animals.
Hallucinations, visions of the past that are somehow related to the trigger, fear. Flashbacks are a symptom of PTSD.
