the human digestive system contains bacteria which aide in digestion for the human as well as vitamin production. the bacteria receive a home and food. this is an example of which type of symbiotic relationship?

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

When analyzing tree rings, what do scientists assume a thin ring indicates?

Everything that surrounds a particular organism