how many chamber are present in heart of fish, amphibians, mammals and reptiles
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ᴛᴡᴏ ᴄʜᴀᴍʙᴇʀs: ᴏɴᴇ ᴀᴛʀɪᴜᴍ ᴀɴᴅ ᴏɴᴇ ᴠᴇɴᴛʀɪᴄʟᴇ (ғɪsʜ) ᴛʜʀᴇᴇ ᴄʜᴀᴍʙᴇʀs: ᴛᴡᴏ ᴀᴛʀɪᴀ ᴀɴᴅ ᴏɴᴇ ᴠᴇɴᴛʀɪᴄʟᴇ (ᴀᴍᴘʜɪʙɪᴀɴ ᴀɴᴅ ʀᴇᴘᴛɪʟᴇ) ғᴏᴜʀ ᴄʜᴀᴍʙᴇʀs: ᴛᴡᴏ ᴀᴛʀɪᴀ ᴀɴᴅ ᴛᴡᴏ ᴠᴇɴᴛʀɪᴄʟᴇs (ʙɪʀᴅ ᴀɴᴅ ᴍᴀᴍᴍᴀʟ)
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Answer:
fish amphibian-2
reptile-3 mostly
mammal-4
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