Well, the slaves were treated badly, made to do extra work. They were also punished by whipping. Also, when the slaves were being transported, they were all packed in little spaces on ships. They got ill, and those who died or were very ill were tossed out of the ship. Hope i helped. Have a nice day.
I believe the answer is D) cultural differences.
Nothing is mentioned in the question about noise levels or religious differences, and source effects are the influence the person/character delivering the message, so unless all the customers are objectum-sexual, this wouldn't be right either.
Answer: coal burning factories and increased automobile usage has caused air pollution
Explanation:
