Answer:
Sounds are higher or lower in pitch according to the frequency of vibration of the sound waves producing them. ... A high frequency (e.g., 880 hertz [Hz; cycles per second]) is perceived as a high pitch and a low frequency (e.g., 55 Hz) as a low pitch.
Explanation:
CivilWarSaga.com says, It is estimated that at least 100,000 Union soldiers were boys under 15 years old and about 20 percent of all Civil War soldiers were under 18. Hope this helps :)
Answer: The way humans depend on the environment for food, timber, water, and other resources in order to fulfill their needs, humans modify the environment. It allows them to extract and utilize the resources with less effort. Some of these modifications include: Cutting down the forests to increase agricultural land and grow more food.
Explanation:not sure if this is right
It once had people that sacrificed humans.
