Q: What is the upper-most atmosphere known as? Choices: - xerosphere - exosphere - ionosphere - thermosphere A:
thermosphere

Q: Uranium is an example of a non-renewable resource used to produce what type of power? Choices: - water - wind - electrical - nuclear A:
nuclear

Q: Electric substations have what devices, which use electromagnetic induction to increase or decrease the voltage of the current? Choices: - transistors - generators - tubes - transformers A:
transformers

Q: What is the main difference between prokaryotic or eukaryotic cells ? Choices: - the type of metabolic waste - the presence of cell walls - the presence of a Golgi Apparatus - the presence of a nucleus A:
the presence of a nucleus