Answer:
The one major change that occurred was the placement and organization of the electron.
According to the second law of thermodynamics, energy is never 100% efficient because some of the energy disperses as heat.
Answer: Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic. There are exceptions, however. Some bacteria thrive in extreme heat or cold, while others can survive under highly acidic or extremely salty conditions.