Agricultural sector is different from economic sector in the way research is conducted.
In the noun phrases agricultural sector and economic sector, you mention specific sectors – agricultural and economic. It is obvious that you are not talking about the bananas sector and the pornography sector.
If you mention a noun and both you and your reader know exactly which noun you’re talking about, then you must use the definite article ‘the’:
🙂 The agricultural sector is different from the economic sector in the way research is conducted.
Admittedly, identifying the main noun in a noun phrase becomes challenging with longer phrases. For example, can you identify the main noun in the following highlighted phrase? Answers in the comments section below! 🙂
I sometimes experience difficulties with the less obvious and more subtly nuanced aspects of article use in unnecessarily complicated academic writing.
Have fun with ‘the’. See you in the comments section.