Choking is prevented by the

A. diaphragm remaining down

B. vibration of the vocal cords

C. esophagus moving the food

D. epiglottis covering the voice

Ppcc assigned a story board on eg.ppcc.edu about a post-apocalyptic world called the books of wisdom. i was wondering if anyone had any advice on how to do well. also is there a way to change you name?

Explain how earth is like a giant bar magnet. how is our magnetic field made?

Why has there been such a large increase in theft and other crimes in the u.s