Matches in Library of Congress for { ?s ?p Why do cuts bleed? -- Why do cuts form scabs? -- Why do bruises change color? -- Why is blood red? -- Why do my feet get cold first? -- What does my heart do? -- What keeps my heart beating? -- What makes my heart beat faster? -- What causes a heart attack?. }
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- 2002003543 description "Why do cuts bleed? -- Why do cuts form scabs? -- Why do bruises change color? -- Why is blood red? -- Why do my feet get cold first? -- What does my heart do? -- What keeps my heart beating? -- What makes my heart beat faster? -- What causes a heart attack?".
- 2002003543 tableOfContents "Why do cuts bleed? -- Why do cuts form scabs? -- Why do bruises change color? -- Why is blood red? -- Why do my feet get cold first? -- What does my heart do? -- What keeps my heart beating? -- What makes my heart beat faster? -- What causes a heart attack?".