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Fill in the blanks.1. Respiration is the process essential for ______ of living things. 2. Inhaled air has ____ oxygen and _____ has carbon dioxide. 3. ______ can breathe both with lungs and skin. 4.The latest respiratory disorder is |
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Answer» 1. survival 2. more, less 3. Frog 4. COVID- 19 |
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