The answer is probably A but it could be all of them.
An esophagus, a trachea, lungs, liver, spleen, heart, stomach, small intestine and a colon!
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The immune system doent take it as a threat but other systems would take it as a threath
Answer:
if your difficulty in sleeping is not due to health problems, here are some tips that can help you get back to sleep. Stop watching the clock. Marking off the minutes only heightens your distress about being awake. Try relaxing your body to fall asleep.
Explanation:
