Question

59. Air sacs of birds
(A) keep the body warm
(B) increase upthurst of the bo
(C) absorb 02
(D) none
60. Bird which is capable of flyin​

Answer 1

$\huge\underline\frak\red{Ǫᴜᴇsᴛɪᴏɴ:-}$

Q. ᴀɪʀ sᴀᴄs ᴏғ ʙɪʀᴅ -

✳ ᴋᴇᴇᴘ ᴛʜᴇ ʙᴏᴅʏ ᴡᴀʀᴍ.

✳ ɪɴᴄʀᴇᴀsᴇ ᴜᴘᴛʜʀᴜsᴛ ᴏғ ᴛʜᴇ ʙɪʀᴅ.

✳ ᴀʙsᴏʀʙ 02.

✳ ɴᴏɴᴇ.

$\huge\underline\frak\red{ᴀɴsᴡᴇʀ:-}$

ᴀɪʀ sᴀᴄs ᴏғ ʙɪʀᴅ -

✳ ɪɴᴄʀᴇᴀsᴇ ᴜᴘᴛʜʀᴜsᴛ ᴏғ ᴛʜᴇ ʙɪʀᴅ.

ᴛʜᴀɴᴋ ʏᴏᴜ ☺✌..