Chemiluminescence. (1:40) Chemiluminescence INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE: chemical change
CLUE:

What element breaks down into yttrium-90?

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree