Answer is c
i just went through the test
After civil war the slaves that were released needed jobs so they worked as share copers by keeping up the fields for the owner and they would either be paid or get a certain amount of the crop.
Grocery store: bags, wages, (employees)/ insurance property taxes and inventory
It demonstrated that adding iron to the ocean can incite an unobtrusive phytoplankton sprout, however insufficient to bring about major climatic change. Later investigations demonstrated more prominent microscopic fish sprout. General it bolstered the speculation, however, it wasn't the last word.
It is as yet vague on the off chance that it would be conceivable or moral to incite worldwide tiny fish sprouts to diminish barometrical CO2
