How this site is checked

The questions are past New York State Regents Examinations in Earth and Space Sciences, published by the New York State Education Department (NYSED). NYSED does not run or approve this site.

Dr. Antonios Marsellos, a geologist at Hofstra University, read every explanation on this site against its question and the official answer key. Writing tools, including AI tools, helped draft the explanations. Outside readers then checked the work, and Dr. Marsellos made the final decision on every explanation.

If you find an error, use the "Report a problem with this question" button on the question's page. Each report is read, and the explanation is corrected.

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