🔘 Fill-in-the-blanks: Dropdown [FDR]:
🖥 Ocean acidification, (1) _____ [that / what / which / whom] occurs when seawater absorbs excess carbon dioxide from the atmosphere, poses a significant threat to marine ecosystems. Shellfish and coral reefs (2) _____ [have / is / be / are] particularly vulnerable to this chemical change, as it weakens their protective structures. Unless urgent action is taken to reduce emissions, scientists warn (3) _____ [that / whether / if / unless] marine biodiversity will face catastrophic decline within this century.
✅ Which
✅ Are
✅ That
👨🏻🏫 @Ali_Pirdehghan
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#FDR
#RWFIB
August 26, 2026 146
