Aeroponic farming advantages and disadvantages short and sweet.​

you need more balloons

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.

if you listed your answers right then i believe your answer is b.

protistas excret ethanol used in the manufacture of vinegar