On X-MOL, navigate to the 'Environmental Science' journal category. Identify all unique journal titles and their corresponding Impact Factors displayed on the page. List these unique journals and their Impact Factors, sorted in descending order by Impact Factor.
Navigate to 'x-mol.com'. Click on the '期刊' (Journal) link to go to the journal list page. Click on the '环境' (Environmental Science) link to filter journals by this category. Scroll down the page sufficiently to ensure all prominently displayed unique journal titles and their Impact Factors are visible. Identify all unique journal titles and their Impact Factors from the displayed content. List the identified unique journals and their Impact Factors, sorted by Impact Factor in descending order.
Successfully navigate to the 'Journal List' page. Successfully filter journals by the '环境' (Environmental Science) category. Identify all unique journal titles and their Impact Factors displayed on the page after sufficient scrolling. State the titles and Impact Factors of all unique journals found on the page. Ensure the listed journals are sorted in descending order of their Impact Factors.