The regions of the atmosphere, where clouds form and where we live respectively, are :-
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The atmosphere is divided into layers based on temperature. The troposphere is the lowest layer, extending from the Earth's surface up to about 8-15 km. This is where virtually all weather occurs, including cloud formation, and it is the layer in which we live. The stratosphere is the layer above it, known for containing the ozone layer but not where common clouds form or where life exists.
Therefore, the correct regions are the Troposphere for both cloud formation and where we live.
Final Answer: Troposphere and Troposphere