FACTS: Radio wave is not a sound wave. It is a electromagnetic wave.
Electromgnetic waves are super fast. They travel at the speed of light
Radio waves bounces around the Earth and clouds.
Answer:
B
Explanation:
A sinkhole, also known as a cenote, sink, sink-hole, swallet, swallow hole, or doline, is a depression or hole in the ground caused by some form of collapse of the surface layer. Most are caused by karst processes – the chemical dissolution of carbonate rocks or suffosion processes.
Explanation:
What was the most important reason why the Union wanted to capture Richmond? Richmond was the capital of the South. Why did the South need support from Europe? The South needed money for the war effort.