I think that the answer would be a or d.
i dont know.
Hope this helps
Answer:
The blue
Explanation:
It's going faster the waves are shorter so it's caring more energy at higher frequencies.
Hope this helps! Please mark brainliest!
Answer:
An extensive tract of level or rolling land, destitute of trees, covered with coarse grass, and usually characterised by a deep, fertile soil. They abound throughout the Mississippi valley, between the Alleghanies and the rocky mountains. From the forests and the prairies, From the great lakes of the northland.
Explanation: