<span>B. Aggregate. Stone, gravel, and other bits of crushed rock are known as the 'aggregate' in Earth Science, as they are made up of the aggregation of extraneous bits of stone. They are a nonrenewable resource which we rarely think about, but which is utilized for a number of different industries and day-to-activities. It can be man made as well as naturally occurring.</span>
Answer: Electromagnetic spectrum
Explanation: I believe this is the answer you are looking for I may be incorrect.
Imaginary line or Half of the earth dividing north east west or south.
