Question

Humqn beings use the oxygen in the air and breathe out carbon dioxide
(Underline the nouns)

Answer 1

$<font color="Purple">$

$\huge{\boxed{\boxed{Hey}}}$

$</font>$

$\bold\red{♡FollowMe♡}$

Nouns are underlined in the given sentence below.

Human beings use the oxygen in the air and breathe out carbon dioxide.

$<font color="blue"> <marquee>$

HOPE IT HELPS...

Answer 2

Answer:

Proper Noun

Human Beings

Oxygen

Carbon dioxide

Common Noun

air