linuschoudhury
So there can be multiple ands in a single list?
Hello
linuschoudhury,
We hope this finds you well.
Having gone through the question and your query, we believe we can help resolve your doubt.
In any list with more than two elements, the last element is joined to the list with the "comma + conjunction" construction, and the others are always joined through commas. However, individual elements within the list can feature conjunctions, if the element is a compound noun, as is the case here.
The subject of the sentence is "changes in agriculture", and the sentence informs us that the changes involved two things in a list - a "large-scale introduction" and a "substitution"; these elements are joined by an "and". Within this list, the first element is an "introduction" of two things, also in a list, - "enclosed fields" and "new farming techniques and crops": these elements are also joined by an "and". Further, as you can see, the second element is also a compound noun - "farming techniques" and "crops" listed together and joined by an "and".
Essentially, although we see three instances of "and" here, there are not three conjunctions in the list; rather, there are three lists, one within another, each containing one "and".
We hope this helps.
All the best!
Experts' Global Team