No todas las bacterias son perjudiciales los lactobacilos son bacterias que ayudan en la digestión
Answer:
I think that it is mate selection though not sure
Not sure if you still need this answer but i am pretty sure its the third option.
Answer:
(E) left atrium.
Explanation:
Pulmonary veins are veins that carry oxygenated blood from the lungs to the heart (left atrium). These veins are part of the pulmonary circuit:
Venae cavae are a vessels (vena cava interior and superior) that carry deoxygenated blood from the body to the right atrium. From the right atrium through the tricuspid valve the blood goes into the right ventricle. Then, from the right ventricle through the pulmonary valve the blood goes into the main pulmonary artery which carries deoxygenated blood to the lungs (to recieve oxygen). Oxygenated blood from the lungs travels to the heart: two pulmonary veins from each lung to the left atrium.
