Are you looking for the term for a chemical pollutant?
Answer:
chloroplasts
Explanation:
"<em>Photosynthesis takes place inside plant cells in small things called chloroplasts. Chloroplasts (mostly found in the mesophyll layer) contain a green substance called chlorophyll. Below are the other parts of the cell that work with the chloroplast to make photosynthesis happen.</em>"
Credit goes to https://www.eschooltoday.com for the quote