Question

Fill in the blanks:

a. All animals breathe in ____________ gas and breathe out _________ gas.

b. Air enters in our body through ________. (Nostrils/ Skin)

c. The blood which is present in the lungs absorbs ________ from air. (Oxygen/carbon dioxide)

d. The breathing organ of fish is known as ________.

e. Insects have small openings on the sides of their body called _______.​

Answer 1

Answer:

• O2; CO2
• Nostrils
• Oxygen
• Spiracles

Explanation:

Mark as brainiest plz

Answer 2

Answer:

1. i) oxygen ii)carbon dioxide
2. nostrils
3. oxygen
4. gills
5. spiracle

like , vot and follow for more!

mark me the brainliest