<span>2,575 years passed between 3100 BC and 525 BC. Calculation of years in the BC era is found by taking the earlier date, or larger number, and subtracting the later or more recent date, the smaller number. 3100 - 525 = 2,575 years.</span>
In subsistence farming, planting decisions are made based on a family's needs, whereas in cash-crop farming, farmers plant strategically to capitalize on demand and market prices. While some farmers grow crops for the sole purpose of feeding their families, others engage in both cash crop and subsistence farming
Answer: B and D
Explanation: I got it right in class
