Question

what is respiration in human beings​

Answer 1

Respiration means inhaling and exhaling of air. In humans, we inhale air rich in oxygen and exhale air rich in carbon dioxide through our nostrils

Answer 2

ʀᴇsᴘɪʀᴀᴛɪᴏɴ ɪs ᴛʜᴇ ʙɪᴏᴄʜᴇᴍɪᴄᴀʟ ᴘʀᴏᴄᴇss ɪɴ ᴡʜɪᴄʜ ᴛʜᴇ ᴄᴇʟʟs ᴏғ ᴀɴ ᴏʀɢᴀɴɪsᴍ ᴏʙᴛᴀɪɴ ᴇɴᴇʀɢʏ ʙʏ ᴄᴏᴍʙɪɴɪɴɢ ᴏxʏɢᴇɴ ᴀɴᴅ ɢʟᴜᴄᴏsᴇ, ʀᴇsᴜʟᴛɪɴɢ ɪɴ ᴛʜᴇ ʀᴇʟᴇᴀsᴇ ᴏғ ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ, ᴡᴀᴛᴇʀ, ᴀɴᴅ ᴀᴛᴘ (ᴛʜᴇ ᴄᴜʀʀᴇɴᴄʏ ᴏғ ᴇɴᴇʀɢʏ ɪɴ ᴄᴇʟʟs). ... ɴᴏᴛᴇ ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏғ ᴏxʏɢᴇɴ, ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ, ᴀɴᴅ ᴡᴀᴛᴇʀ ᴍᴏʟᴇᴄᴜʟᴇs ɪɴᴠᴏʟᴠᴇᴅ ɪɴ ᴇᴀᴄʜ 'ᴛᴜʀɴ' ᴏғ ᴛʜᴇ ᴘʀᴏᴄᴇss.❣️