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>
FM radio waves and waves that are used in microwaves and radar are used by mobile phones.
The collision theory<span> is based on the assumption that for a reaction to occur it is necessary for the reacting species atoms or molecules to come together or </span>collide<span> with one another.\</span>
It takes place in the stroma
In mitosis a cell divides to form two identical daughter cells. It is important that the daughter cells have a copy of every chromosome, so the process involves copying the chromosomes first and then carefully separating the copies to give each new cell a full set. Before mitosis, the chromosomes are copied.
