I'm pretty sure it's difficulty concentrating
Answer:
<em>Urban</em><em> </em><em>areas</em><em> </em><em>are</em><em> </em><em>affected</em><em> </em><em>by</em><em> </em><em>migration</em><em>.</em><em> </em>
Answer:
Explanation:
Erythropoiesis is the process by which red blood cells, also known as erythrocytes, are made and are stimulated by decreased levels of oxygen in the blood, which sets into motion the secretion of erythropoietin, a hormone central to the formation of red blood cells
Do anything that is not what your supposed to be doing
A pandemic<span> (from Greek πᾶν pan "all" and δῆμος demos "people") is an </span>epidemic<span> of infectious disease that has spread through human populations across a large region; for instance multiple continents, or even worldwide.</span>