Громкость звука зависит от... А. частоты звука. Б. амплитуды колебаний. В.скорости звука.

My summer was awesome. All the time were very funny situation and a good mood. In early summer, I am with day to day walking with his friends with whom I am well. In the middle of the summer, I went to sea in Turtsiyu.Gde was very very best I was thrilled just to clear sea and this beauty. Do not want to leave. At the end of the summer I was again with friends, but I believe that my summer was the best.