Answer:
I think it both physical & chemical change :')
Answer: C. <em><u>She should decrease the frequency of the wave</u></em>
<em>Explanation: this makes the waves shorter causing it to become louder the the human ear!</em>
<h3><u><em>hope it helps</em></u></h3>
Answer: Conductor
Explanation: A material that conducts thermal energy well is called a thermal conductor.
Answer: Decreased temperatures and increased salinity. Colder water is denser than warm water and the higher the salinity of water the denser it is.
The formula for phosphorus is P4