Which shows a balanced chemical equation for the decomposition of aluminum oxide
(Al₂O₃)?
A Al2O3 + 2 Al + O2
BALLO, 2 Al + 3 Oz
C2 A1203 → 4 Al + O2
D 2 Al2O3 → 4 Al + 3 Oz

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b. colder climates near the equator c. large waves on the cost of europe d. warm climates in northern europe

Which of the following best describes technology a. something created for only scientists to use b. the method of thinking that scientists use. c. the application of engineering to create useful products. c. a scientific idea