2. If the direction of an applied force is changed once, to what was the force applied? A. a compound machine
B. a heat engine
C. an electrical machine
D. a simple machine

Identify one disadvantage to each of the following models of electron configuration: dot structures arrow and line diagrams written electron configurations type in your answer below.

How much energy is made when a pice of wood burns. how do you know

All of the following are part of the biosphere except