What does 'the matter in your body has been on earth for billions of years.' mean? !

Ineed advice! its importantokay so.. i made a bad choice at school and was sent to an alternative i go back to my home school at the end of the month ..and i'm seriously scared to go back because i know people have been talking about me behind my back calling me names.. and when i walk into first block everyone is going to stare and start talking about i've lost friends and i'm alone.. the whole school now thinks i'm something that i'm i don't know what to do when i get back or how i'm even going to survive the first day. i want people to leave me alone but i know they won't.. anyone have advise? i really need it.. ime getting terrible anxiety from me thinking about all this stuff

The youngest babies change position once every on average. a. 5 minutes b. half hour c. minute d. 10 minutes

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above