Which blood vessel carries blood from the lungs to the heart, X, Y or Z?

Explain the difference between incomplete dominance and codominance

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior