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Air by Kallen

Horizontales
Does air have colour?
Which plant gives oxygen at night?
What is 0.9% of air made up of?
Air is used by humans in the _________ process
When we exhale, we mostly breathe out ______________
Who named oxygen?
What is 78% of air made up of?
What is 21% of air made up of?
When air is moving fast its called _________
What city has the most air pollution in the world in 2020
Air has no ______
Verticales
_____ give of air
Air has no ______
What planet besides Earth has air?
A type of ________ can live without oxygen
What is 0.4% of air made up of?
What is 1% of air made up of?
What is the #1 plant for air purifying?
Does air have weight?
What city has the cleanest air in the world in 2020