Which property of a sound wave increases as the pitch of the sound increases? A. Frequency
B. Wavelength
C. Rest position
D. Amplitude

it's A, I'm taking this test on apex and got it right. hope this helps!

Explanation:

also here's an explanation: The frequency of a sound wave is what your ear understands as pitch. A higher frequency sound has a higher pitch, and a lower frequency sound has a lower pitch. In Figure 10.2 sound A has a higher pitch than sound B.

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

the answer is c) an oak tree