Answer:
Even though the symptoms of the stimulants and depressants are quite opposite, the causes of these symptoms are completely unrelated. A stimulant could cause one area of the brain to release a chemical and a depressant could affect a completely different area of the brain. They don't have to counteract each other.
Explanation:
this is true! someone can have it and not have any presentable symptoms
Answer:
Obesity.
Anatomical considerations, such as the size of the chest and the location of the heart within the chest.
Movement during the test.
Exercise or smoking before the test.
Certain medicines.
Electrolyte imbalances, such as too much or too little potassium, magnesium, or calcium in the blood.
Explanation:
