It's A because it's a good amount that can fit a regular cup.
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:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.
Since everything is “lighter” in space due to the lack of gravity, you don’t need as much strength to do things so your muscles begin to deteriorate and weaken because you aren’t maintaining your strength.
Usually just considered an idea. Some say it's a theory, others a hypothesis. I feel like it's just an idea with NO facts whatsoever.
