189 THEMATIC INDEX Thematic Index 70, 79, 81, 89, 91, 106, 132, 136, 161 Food 7, 9, 42, 43, 44, 45, 46, 47, 52, 55, 58, 60, 61, 63, 64, 80, 122, 127, 135, 140, 157 Food Chains and Webs 7, 61 Force and Motion 6, 8, 55 Freedom 16, 82, 84, 106, 120, 133, 152, 162 French Revolution 97, 131 Friendship 12, 15, 26, 28, 32, 36, 42, 51, 52, 59, 60, 63, 64, 66, 67, 69, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 85, 86, 93, 98, 99, 100, 101, 102, 103, 104, 105, 107, 108, 109, 110, 111, 113, 116, 117, 118, 127, 130, 134, 135, 139, 141, 144, 146, 149, 150, 151, 153, 159, 161, 163, 164 G Gender Equality 17, 22, 98 Generosity 23, 26, 52, 53, 85, 127, 128 Geography 36, 130 Geological Eras 111, 150 Girls and Women 34, 37, 39, 120, 136 Gravity 118 Great Depression 94 Growing Up 46, 47, 55, 65, 67, 68, 74, 84, 101, 102, 105 H Habitats and Ecosystems 10, 42, 99 Health and Well-Being 7, 9, 10, 18, 20, 24, 25, 29, 44, 47, 60, 87, 88, 101, 117, 119, 126 Heroes 151 Hispanics in the U.S. 17, 22, 33 Historical Figures 11, 16, 17, 105, 121, 122, 126, 133, 134, 154 History 104, 136 History of Science 31, 37, 92, 123 Holidays and Celebrations 26, 29, 36, 50, 52, 53, 54, 57, 59, 73, 78, 94, 127, 128, 130, 145, 156, 161 Holocaust 95, 106, 131, 138 Honesty 83, 86, 108, 114 Horror 154 Horror Stories 114, 147, 148 How Things Work 80, 88, 91, 93, 95, 96, 100, 119, 124, 125, 126, 131 Human Body 23, 41, 43, 82, 87, 92, 119, 126 Humanitarians 31, 97, 106, 131, 138 Human Rights 140, 153, 154 Humor 24, 32, 35, 41, 44, 51, 56, 59, 60, 63, 69, 71, 72, 76, 77, 79, 81, 84, 91, 92, 93, 97, 99, 101, 102, 103, 104, 105, 107, 109, 110, 112, 115, 116, 128, 135, 136, 140, 142, 143, 147, 148, 151, 157, 158, 162, 163, 164
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