An electric generator is when a magnet is rotated through a coil of wire to produce an electric current.
The mitochondria is the powerhouse of the cell because it takes nutrients and breaks it down to provide energy for the cell.
The ONLY way to change the volume of a sample of gas is to transfer it to a container with different volume.
Simply changing its temperature or pressure in the same jar won't do it. Any amount of gas always fills whatever container you keep it in.
B. Newton's First Law, I'm pretty sure. The first states that an object in motion stays in motion, and an object at rest stays at rest until an outside force is applied, and that seems pretty relevant.
