Question

Difference between aves and pisces based on criteria

Answer 1

Aves- 1)Most of their skin is covered with feathers

         2)They have four-chambered heart

         3)They breath with their mouth or nostrils.

         4) They are known as birds

Pisces- 1)They breath the oxygen dissolved in water

            2)They have scales on their body

            3)They respire with their gills

            4) They are mainly fishes

Hope it helps!

Answer 2

✌️✌️ hey mate,

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➡️ᴄʜᴀʀᴀᴄᴛᴇʀɪsᴛɪᴄs ᴏғ ᴄʟᴀss ᴀᴠᴇs:

1⃣. ᴛʜᴇ ᴍᴇᴍʙᴇʀs ᴏғ ᴄʟᴀss ᴀᴠᴇs 
ᴀʀᴇ ᴄᴏᴍᴍᴏɴʟʏ ᴋɴᴏᴡɴ ᴀs ʙɪʀᴅs. 

2⃣. ᴛʜᴇɪʀ sᴋɪɴ ɪs ᴄᴏᴠᴇʀᴇᴅ ᴡɪᴛʜ
 ғᴇᴀᴛʜᴇʀs.

3⃣. ᴛʜᴇʏ ʙʀᴇᴀᴛʜ ᴡɪᴛʜ ᴛʜᴇɪʀ 
ᴍᴏᴜᴛʜ ᴏʀ ɴᴏsᴛʀɪʟs.

4⃣. ᴛʜᴇʏ ʜᴀᴠᴇ ғᴏᴜʀᴄʜᴀᴍʙᴇʀᴇᴅ 
ʜᴇᴀʀᴛ ᴀɴᴅ ᴇxʜɪʙɪᴛ ʜɪɢʜ ᴍᴇᴛᴀʙᴏʟɪᴄ
ʀᴀᴛᴇ.

➡️ᴄʜᴀʀᴀᴄᴛᴇʀɪsᴛɪᴄs ᴏғ ᴄʟᴀss ᴘɪsᴄᴇs:

1⃣. ᴛʜɪs ᴄʟᴀss ɪɴᴄʟᴜᴅᴇ ᴡᴀᴛᴇʀ 
ᴀɴɪᴍᴀʟs ᴍᴀɪɴʟʏ ғɪsʜᴇs. 

2⃣. ᴛʜᴇɪʀ sᴋɪɴ ɪs ᴄᴏᴠᴇʀᴇᴅ
 ᴡɪᴛʜ sᴄᴀʟᴇs.

3⃣. ᴛʜᴇʏ ʀᴇsᴘɪʀᴇ ᴡɪᴛʜ ᴛʜᴇ ʜᴇʟᴘ ᴏғ 
ɢɪʟʟs.

4⃣. ᴛʜᴇʏ ʜᴀᴠᴇ ᴛᴡᴏ ᴄʜᴀᴍʙᴇʀᴇᴅ ʜᴇᴀʀᴛ 
ᴀɴᴅ sɪɴɢʟᴇ ᴄɪʀᴄᴜʟᴀᴛɪᴏɴ ᴏғ ʙʟᴏᴏᴅ.
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thanks....