D.
If the vibrations have a low frequency, the sound is heard as a __low-pitched sound_____. If the vibrations have a high frequency, then the sound is heard as a __high-pitched sound_____.
Explanation:
High pitched sound is of higher frequency because they make the air molecules vibrate much faster than low-pitched sound. Due to their high frequency, their wavelength is shorter (Remember wavelength and frequency are inversely proportional). Vice versa is true to the low-pitched sound. They vibrate air molecules slower than high-pitched sound. Their wavelength is longer and frequency smaller.
Learn More:
For mor on pitch of sound check out;
brainly.com/question/61859
brainly.com/question/1509263
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B. No is correct.
Hope that helps!
Metabolism can be described as the
chemical process that involves the breakdown of food consumed to give energy
which can be used to carry out activities by living organism. The consumption
of oxygen can be adopted as a means to estimate the metabolic rate because oxygen
is required for synthesis of ATP ( Adenosine Tri-Phosphate) through oxidative phosphorylation. Also, it is
important for fermentation to occur as well as helps in replenishing low level
of glycogen
on ED the answers for this question is B and D.
