Question

Once the air is breathed in. It reaches
the lungs and passes
in to bronchioles (small
Tubes). At the end of
bronchioles, tiny air
sacs called aiveoli
present. All from
bronchioles reaches
the alveoll Alveollare
surrounded by blood
vessels. Here
exchange of gases
helwoon
and air sacs takes
place. The oxygen
present in the
breathed all enters in
blood vessels and
carbon dioxide present
in the blood goes out
into the alveoli Thus,
exchange of gases
takes place in the all
once it reaches the
lungs. Identily 'X:
A) blood
B) blood vessels
C) oxygen
D) carbon dioxide​

Answer 1

Answer:

blood

Explanation:

once the air is breathed it reaches to the blood

Answer 2

Answer:

C) oxygen

Explanation:

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