What is the ligamentum arteriosum?

Which entry is in the wrong position in the table?

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.

How do the evolutionary chart and the video support the claim that all living things are made up of cells?