The esophagus is a tube in which food is pushed from the mouth to the stomach. as the food is pushed through the esophagus, it becomes more compact. this is-- a) physical change only

b) chemical change only

c) both physical and chemical

d) neither

help sdusdj i got c but it was wrong so now i think its a

Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.