Question

4. Fill in the blanks.
1. Air is a ------------
mainly containing oxygen, nitrogen and argon
2. Plants give out oxygen gas during a proce
during a process called -----------
3. All living organisms need ---------
for respiration.
4. The supporter of combustion in the air is ----------
5. The gas formed during cellular respiration is -----------​

Answer 1

Explanation:

1. mixtute
2. photosynthesis
3. oxygen
4. oxygen
5. carbon dioxide

Answer 2

Answer:

1.) compound.

2.) photosynthesis.

3.) oxygen.

4.) carbon dioxide.

5.) oxygen.

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