Two or more tissues grouped together and performing specialized functions defines a(n).
a. organelle
b. cell
c. organ
d. organ system

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects