Answer:
Secrets? Cuz if I share you the secrets then the secrets will no longer will be secrets.
Earth's original atmosphere was probably just hydrogen and helium, because these were the main gases in the dusty, gassy disk around the Sun from which the planets formed. The Earth and its atmosphere were very hot.
Beats can be defined as the periodic fluctuations in the frequency of sound waves. That is option D
<h3>What are sound waves?</h3>
Sound waves are those waves that are produced by the vibration of an object whose energy is usually propagated through a medium.
When two sound waves of different frequencies meets, a periodic variation that occurs is called beats.
Therefore, Beats can be defined as the periodic fluctuations in the frequency of sound waves.
Learn more about waves here:
brainly.com/question/15663649
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1. Sound waves produced by a vibrating object are compressional waves.
2. Loudness is the human perception of sound wave intensity.
3. The process of detecting objects by bouncing sounds off them is called echolocation.
Answer:
D
Explanation:
im not sure just sounds right
