Blood from the lungs is carried back to the heart by the
a. inferior vena cava
b. pulmonary vein
c. pulmonary artery
d. superior vena cava

B. Pulmonary veins  

Explanation:

The blood returns from the lungs to the heart through the pulmonary veins.

A and D are wrong. The venae cavae carry blood to the heart from other parts of the body.

C is wrong. Arteries carry blood from the heart.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

click to let others know, how is it

mark brainliest and have a great day!