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Respiration in Animals and Plants — BIOLOGY STD 7 — Question

ICSE BoardEnglish MediumSTD 7BIOLOGYRespiration in Animals and Plants2 Marks
Question
What is external respiration ?
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Answer

External respiration or breathing is a mechanical or physical process that involves inhaling (breathing in) air rich in oxygen and exhaling (breathing out) air rich in carbon dioxide.

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