Create a sense of building danger.
I believe that U.S.A. is dependent on oil because oil helps cars, airplanes, helicopters all running.
Answer: She may want to grab your attention to talk about something or something referring to the lessons in class. If not try asking her why she does it. If its neither then i advise you to inform the principal to find out what's going on.
I believe the answer is: Biological perspective
In psychological field, Biological perspective study how Physical condition could affect the overall thought/behaviors in individuals.
This involves several factors such as genetics, hormones, Gender, brain activities, immune system,etc.
The ideas are The central tenet of Christianity is the belief in Jesus as the Son of God and the Messiah (Christ). Christians believe that Jesus, as the Messiah, was anointed by God as savior of humanity and hold that Jesus' coming was the fulfillment of messianic prophecies of the Old Testament.