 publisher_txtF_mv:University of Illinois at Chicago UIC ngssCC_txtF_mv:Cause and effect: Mechanism and explanation gradeLevel_txtF_mv:8Organization: University of Illinois at Chicago UIC NGSS Crosscutting Concepts: Cause and effect: Mechanism and explanation Grade Level: 82 6 2 7 8 2 9 1 1 10 more ... 1 11 1 12 1 2 1 3 1 4 1 5 1 K see all ... less ... 