Answer:
The correct option is : b. can be mild, moderate, or severe
Explanation:
Myocardial infarction, or heart attack, is a medical condition that occurs when the flow of blood stops or decreases to the human heart, thus causing damage to the heart muscles. Some of the symptoms include chest pain, nausea, sweating, cold sweat, fatigue, etc.
Heart attacks<u> can be mild, moderate or severe and can also cause sudden death. </u>
If the inadequate blood flow to the heart lasts long enough, it can lead to <u>necrosis of the heart tissues</u>.
Myocardial infarction can be <u>diagnosed by electrocardiogram (ECG), echocardiogram, blood tests, X-ray, angiogram, MRI.</u>
Option A. troposphere
Good luck
I would say that the temperate zones though they do have areas such as the Pacific NW that have significant rainfall, but relative to the tropics are apparently relatively dry since they contain most of the world's deserts like the Sahara, the Sonora and the Gobi and the Atacama for example.
B. Nucleic Acids
Only Nucleic Acids contain phosphorus
