Question

what is respiration...​

Answer 1

Explanation:

In physiology, respiration is the movement of oxygen from the outside environment to the cells within tissues, and the removal of carbon dioxide in the opposite direction.

Answer 2

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• Rᴇsᴘɪʀᴀᴛɪᴏɴ ɪs ᴛʜᴇ ᴍᴏᴠᴇᴍᴇɴᴛ ᴏғ ᴏxʏɢᴇɴ ғʀᴏᴍ ᴛʜᴇ ᴏᴜᴛsɪᴅᴇ ᴇɴᴠɪʀᴏɴᴍᴇɴᴛ ᴛᴏ ᴛʜᴇ ᴄᴇʟʟs ᴡɪᴛʜɪɴ ᴛɪssᴜᴇs, ᴀɴᴅ ᴛʜᴇ ʀᴇᴍᴏᴠᴀʟ ᴏғ ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ ɪɴ ᴛʜᴇ ᴏᴘᴘᴏsɪᴛᴇ ᴅɪʀᴇᴄᴛɪᴏɴ.