That would be biochemistry.
Answer: B. Wave A is louder than Wave B.
Explanation: The loudness of sound is measured in unit called decibels (dB).
A decibel unit measures the relative intensity of sounds on a scale from zero to about 100 dB. dB is a measure of intensity, which relates to how much energy the pressure wave has.
Given : Wave A is rated at 100 dB, and Wave B is rated at 90 dB.
Thus we can infer that as wave A has a higher value than wave B, wave A is more louder than wave B.
Have you got the list of characteristics on you? If not, both contain cells with chloroplasts, which is used to carry out the photosynthesis. Hope this helps.
Answer:
C and D
Found the answer from an old quizziz I had