Which layer of atmosphere has highest density of gas molecules

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Which is an accurate description of the physical characteristics of poland? its fertile soil is found only along riverbanks, and its mountainous region in the northwest has few mineral resources. it is mostly flat with fertile soil except in the east and northeast, and the mountainous region in the south has large deposits of coal and copper. it is covered with thick forests, and it has large reserves of coal, petroleum, and natural gas. its landscape is dominated by plateaus, mountains, and high ridges, and it has large deposits of sulfur and copper in the northeast.

Compare nato and the eu; list 2 similarities contrast nato and the eu; list 2 differences what did you learn about nato and the eu? were you surprised by any of it? 1st answer will get brainliest