You can't usually see gases in the air. How can u observe gases withou

1.	You can't usually see gases in the air. How can u observe gases without seeing them
Answer» Answer: by their ODOUR or taste or COLOUR or pressure APPLIED by them.

You can't usually see gases in the air. How can u observe gases without seeing them

Answer»

Answer:

by their ODOUR or taste or COLOUR or pressure APPLIED by them.