Answer:
The main use for gypsum is in the production of Plaster of Paris and drywall products. Gypsum is also used as a soil conditioner.
Explanation:
A.) Each point on a wave front acts as a source of secondary waves.
Saturn is very commonly known for its rings
A longitudinal wave transports energy through the medium without permanently transporting matter.
Hope this helps :D
Answer: harder
Explanation: nothing is impossible, therefore is harder because the absence of light will not ¨reflect¨the colors to the retina of the eyes
