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erma4kov [3.2K]
3 years ago
10

What happens to the frequency heard when an observer begins moving toward the stationary source of a sound?

Biology
2 answers:
neonofarm [45]3 years ago
5 0
The answer is the letter c
lana66690 [7]3 years ago
4 0

Answer:

its c

Explanation:

im doing the test

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