Answer:
All waves have amplitude, wavelength, and frequency.
Explanation:
A sound wave's frequency is experienced as the wave's pitch. The amplitude determines loudness or volume. The tone of a sound wave can be recognized by the regularity of its vibration.
Answer:
Below
Explanation:
Brazil had to defend itself from German submarines and other German attacks. Guatemala also had declared war on Germany and fought them.
A megalith is a large stone that has been used to construct a structure or monument, either alone or together with other stones. The word megalithicdescribes structures made of suchlarge stones without the use of mortar or concrete, representing periods of prehistory characterised by such constructions.