The answer is B.
The primary positive effect of the Columbian exchange was the introduction of New World crops, such as potatoes and corn, to the Old World. The most significant negative effects were the transmission of African populations into slavery and the exchange of diseases between the Old and New World.
Answer:
66 acres
Explanation:
As is said in the problem, in Appleland you have 12 apple trees per acre (12 apple trees = 1 acre). To solve this question we must find how many acres are necessaries because there are 792 apple trees in Appleland as follows:
792 Apple trees * (1 acre / 12 apple trees) =
<h3>66 acres</h3>
