Imagine riding on a sled, or in a wagon, or perhaps a school bus that stops quickly or suddenly. What happens to your body if you are not expecting the sudden stop?

American troops were worried about cantracting in cuba a. yellow fever b. hepatitis c. polio

Who was pancho villa? a u.s general who led american troops into mexico an american expert on tropical diseases a mexican rebel who attacked and burned a town in new mexico a leader of a hostile revolt in panama

This photo shows an early mesoamerican structure, specifically from the zapotec culture. what was this structure most likely used for? a.creating terraces for farm fieldsb.practicing religious ceremoniesc.playing a ball game with stone hoopsd.protecting a city from invading armies