The answer would be, A. It absorbs organic materials in the environment.
Hope it helps.
Most of the population in England migrated to cities in the late eighteenth century because of better jobs. In the late 18 century, people forcibly driven from the land into factories by 'enclosure'. Landless, the agricultural labourers who remained were powerless to prevent explotation and were therefore forced to work for long hours for meagre, irregular wages.
I believe the answer to this question is C. Labor needs in the colonies. At first, the settlers came up with indentured servants. Indentured servants then began to die from the hard work, so then the settlers turned to the slave trade, where African Americans were being sold. Since African Americans were used to hard work in Africa, they were the best choice for the job.
