Question

why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?​

Answer 1

Answer:

Diffusion is unable to meet the oxygen requirements of multi-cellular organisms such as humans because diffusion is one of the slow processes. That is a lot of time is required for oxygen to circulate to all the cells of the body. ... Therefore, through diffusion, it becomes difficult for oxygen to reach all the cells.

Explanation:

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Answer 2

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ᴅɪғғᴜsɪᴏɴ ɪs ᴜɴᴀʙʟᴇ ᴛᴏ ᴍᴇᴇᴛ ᴛʜᴇ ᴏxʏɢᴇɴ ʀᴇϙᴜɪʀᴇᴍᴇɴᴛs ᴏғ ᴍᴜʟᴛɪ-ᴄᴇʟʟᴜʟᴀʀ ᴏʀɢᴀɴɪsᴍs sᴜᴄʜ ᴀs ʜᴜᴍᴀɴs ʙᴇᴄᴀᴜsᴇ ᴅɪғғᴜsɪᴏɴ ɪs ᴏɴᴇ ᴏғ ᴛʜᴇ sʟᴏᴡ ᴘʀᴏᴄᴇssᴇs. ᴛʜᴀᴛ ɪs ᴀ ʟᴏᴛ ᴏғ ᴛɪᴍᴇ ɪs ʀᴇϙᴜɪʀᴇᴅ ғᴏʀ ᴏxʏɢᴇɴ ᴛᴏ ᴄɪʀᴄᴜʟᴀᴛᴇ ᴛᴏ ᴀʟʟ ᴛʜᴇ ᴄᴇʟʟs ᴏғ ᴛʜᴇ ʙᴏᴅʏ. ... ᴛʜᴇʀᴇғᴏʀᴇ, ᴛʜʀᴏᴜɢʜ ᴅɪғғᴜsɪᴏɴ, ɪᴛ ʙᴇᴄᴏᴍᴇs ᴅɪғғɪᴄᴜʟᴛ ғᴏʀ ᴏxʏɢᴇɴ ᴛᴏ ʀᴇᴀᴄʜ ᴀʟʟ ᴛʜᴇ ᴄᴇʟʟs.