Tip: Take any required exams far enough in advance so you have time to retake if necessary. GRE subject test(s) may be required by some graduate programs, with some are available on paper only on specific dates/locations. For more about the GRE, see their website at: https://www.ets.org/gre/
While Rod Library subscription resources for earth/environmental sciences are not available once you graduate, consider using the following resources: