There are two changes that a substance can undergo that may either be physical changes or chemical changes (depending on the other changes that occur, too) (they show up in both categories). what are these two changes?

What is the relationship between absorbance of light and the rate of photosynthesis?

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.

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?