Tyra is pregnant. her doctor tells her that at this stage of the baby's development, it can kick, turn its head, open its eyes and already has taste buds. tyra's baby is in the stage of prenatal development.

Which two levels of the spine that can undergo flexion and extension?

Karen is waiting by the lockers before school for her friend richard. they had agreed to look over the history review sheet together to be ready for the test later that day. richard shows up late with uncombed hair and wrinkled clothes. karen: "you're five minutes late and you look like a wreck! " richard: (slams his locker) "you know, i don't have time for this." karen: "fine! figure out the test on your own! "

Which of the following is a lifestyle behavior? a. getting enough sleep b. exercise c. tobacco use d. all of the above