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.
Insects live under rocks. Hope this helps!!
Answer:
The suns average density is greater than water's.
Density (avg) of the sun: 1.4 g/cm
Density of H20: 1.0 g/cm
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It is the last choice because their similar bone structures suggest they once had a common ancestor, which is why they are all mammals.