What is the primary role of the pulmonary vein?

delivering oxygen-poor blood to the left side of the heart

delivering oxygen-poor blood to the right side of the heart

delivering oxygen-rich blood to the left side of the heart

delivering oxygen-rich blood to the right side of the heart

According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..

Which of the following shows the correct order in which light information travels through the eye? (2 points) lens, pupil, retina, optic nerve pupil, lens, retina, optic nerve pupil, lens, optic nerve, retina lens, pupil, optic nerve, retina

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.