Question

What is Oxygen ?

What is the percentage of it in air ?

Koi jaan pehchan vala hai ?

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Answer 1

Explanation:

21 percent

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen

Oxygen is the chemical element

Answer 2

Answer:

oxygen is agas that you cannot see, taste or smell. Plants and animals cannot live without oxygen

ऑक्‍सीजन; एक गैस जिसे न आप देख सकते हैं, न सूंघ सकते हैं और न आप उसका स्‍वाद ले सकते हैं। पौधे और प्राणी बिना ऑक्‍सीजन के जीवित नहीं रह सकते

So what is air, exactly? It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 %percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen

Explanation:

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