The two main properties of sound are frequency and amplitude. The frequency of the sound waves determines the pitch of the sound. The amplitude of sound determines the loudness. The quality of sound is affected by the pitch and the loudness.
No. However, energy is required for facilitated diffusion. Also without the membrane, the cell would collapse and wouldn't be able to function.
Answer:
A ‘receipt’ is a statement saying that what is presented is true
Explanation:
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