Verses elated to the topic appear in which section of the Topic Guide results a, Topic b. Related verses c. Illustrations d. Interactive

47. a student is frightened by a loud noise, which results in a hormone being released into the blood. the hormone causes the student's heart to beat rapidly. the two systems that work together to cause this reaction are the endo- crine system that secretes the hormone and the (1) nervous system (3) excretory system (2) reproductive system (4) digestive system

Which sentence uses the verbs correctly?

Bihots ausarta resumen cada kapitulo