A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first line because it introduces the main topic. It tells us about the agricultural revolution in England. This is a broad overview of the subject. It does not use any pronouns or definite articles that need prior context. Why other lines are not chosen? Paragraph 2 starts with "English (and Dutch) farmers..." which refers to specific farmers and needs context. Paragraph 3 starts with "They also learned..." which uses a pronoun that needs prior information. Paragraph 4 starts with "In other words..." which is a transitional phrase and does not stand alone.

Concluding sentence: Why this is the last line? This paragraph is the last line because it wraps up the main ideas. It shows the result of the farmers' actions and learning. It gives a clear conclusion to the topic of the agricultural revolution.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects with Paragraph 1 because it continues the topic of the agricultural revolution. It shows how farmers were productive during this time. This is a logical order of ideas.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects with Paragraph 2 because it gives more details about what farmers learned. It shows a logical order from general information about farmers to specific information about fertilizers.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it explains the results of what farmers learned. It shows how their interest in farming led to better yields. This is a cause and effect relationship.