The atria are the ""upper""chambers of the human heart. What are ""lower"" chambers of the human heart called?

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.

Plz ! what does it mean for an allele to be dominant?

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