The total weight of all living organisms
The answer is C
Taking to many pills also known as overdosing can cause difficulties breathing and chest pain
Answer: C. David feels sad for a long period, even when something good happens.
Explanation: i felt like that.. so they decided i needed a therapist... funny cause my friend David helped me through those tough days.
Answer:
Sleep apnea
Explanation:
Sleep apnea is a sleep disorder where a person pauses during breathing or breathes shallow while sleeping. Each pause may last for few seconds to few minutes and it can occur several times in one night. It is usually preceded by a loud snoring. It ends with a choking or snorting sound after which normal breathing resumes. It disrupts normal sleep and the person might feel tired the next day.
Sleep apnea maybe obstructive which means that the breathing is hindered by a blockage of air flow or it might be central in which unconscious breathing simply stops or it might be a combination of both.
Since Rick's roommate stopped breathing several times while sleeping his symptoms were most probably caused by sleep apnea.
