Question

2. Which of the following
gases is essential for respiration?
(a)Nitrogen (b) oxygen (c) carbon dioxide (d) argon​

Answer 1

Answer:

Oxygen

Explanation:

oxygen is very essential for all living organisms,without oxygen we can't live.

Answer 2

$\huge\bold{Answer:-}$

⟼ Option number (b) is correct .

★Know more :-

Oxygen is the most important element that is needed for respiration to maintain our life .

If oxygen is not present it is impossible for all the living organisms to live on this earth . infact the producer of oxygen that is plants also need oxygen for their survival . we human beings take oxygen through our nose and exhale carbon dioxide from our body and this process is breathing. Then the oxygen gas helps in the process of breaking down food materials into simpler subsatnces inside our body then there is an exothermic reaction occurs this is called respiration.

Now , plants also need oxygen as they also respire in the night time , they inhale oxygen and exhale carbon dioxide gas into the surroundings.