All tropisms are physical changes true or false

What type of competition exsist between two species. turtles and fish

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

Awolf pack hunts,kills, and feeds on a moose. in this interactions, the moose is a?