To reduce air pollution because carbon emission harms the atmosphere.
Answer:
This is an article so it is a secondary source.
Explanation:
Secondary: (in academic research) a book, article, or other source that provides information about an object of study but does not constitute direct, first-hand evidence.
Primary: (in academic research) a document, first-hand account, or other source that constitutes direct evidence of an object of study.
Use your own words, keeps it short, write objectively, include information from text, and cite.
"Countries with a sphere of influence should maintain free access to their ports"
