8 molecules would result, since 2^3 = 8. Each time PCR is performed, the orginal number of molcules double.
Alveoli are part of the reparation system found in the lungs. They are covered in capillaries. In Alveoli, oxygen diffuses from the air into the blood vessels surrounding the alveoli and carbon dioxide from the body diffuses from blood into the alveoli’s air spaces. Alveoli clump together and form sacs.
<span> It is hotter near the equator because the Sun's rays hit the Earth more directly in that area so they are focused or concentrated more in that area</span>
HI there!!!!!!
It would probably be the heart, brain or our muscles; they are constantly working !
