If powering an electrical device with a battery requires a path for electrons to flow continuously, then powering an electrical device with a battery requires a path for electrons to what? Answer choices: - hydrogen and oxygen - spread out - electromagnetic energy - cut the line - flow continuously - an electron microscope - flood - kinetic energy
flow continuously

If smoke is a product of oxygen being burned, then smoke is a product of what being burned? Answer choices: - an object - oxygen - engines - trees - Oak - energy - Cooking - Cars
oxygen

If evaporation causes cloud formation in the atmosphere, then evaporation causes what to form in the atmosphere? Answer choices: - a solute - sunlight - carbon dioxide molecules - clouds - solar radiation - high pressure areas - heat - energy
clouds

If atolls are built by corals secreting an exoskeleton, then how are atolls built? Answer choices: - important habitats - By coral exoskeletons - by fish - with machines - by a type of eel - It used to be covered by water - The area was once underwater - reusing materials
By coral exoskeletons