Answer: A
I know this because I just took a test on this and I passed with a 99% on my SAT
The term commercial refers to activities of commerce, business operations intended for an exchange on the market with the goal of earning profits. The non-commercial activity also exists in the form of non-profit organizations or government agencies. Hope this helps you!
A myocardial infarction (2) has occurred with blockage of a branch of the left coronary artery (1). Myocardial infarction (MI), commonly known as a heart attack, occurs when blood flow decreases or stops to a part of the heart, causing damage to the heart muscle.
. A heart attack occurs when the blood supply to part of the heart stops and thus causes a section of the heart muscle to begin to die; whereas a cardiac arrest occurs when the heart stops beating as a whole.
They are unicellular or cell cluster microscopic organisms. And scientists use a technique called metagenomics I believe ?