I believe the answer is: The Doppler Effect
According to the doppler effect, as the we move further away from the source of sound, The sound wave need a more time to arrive at our hearing senses.
This would create the illusion that source of sounds that located in further distance gave away sound with lower frequency.
Answer:
b
Explanation:
in the late 1800s and the industrial revolution, children were used as labor in major factories to maintain workforce. Many factories performed unsafe working procedures and chemicals could contaminate the children.
The commodity value is the value reflected by the price of the good or service, and the surplus-value is essentially the profit. In any case, one would most likely wish for additional surplus value that would be greater then the commodity value, in an effort to not only pay for the cost of production, but also to turn a profit in which to expand the business with.
The plaintiff's lawyer calls witnesses to the stand, where they take the oath.