Land use. Europe is one of the most intensively used continents on the globe. It has the highest proportion of land (up to 80%) used for settlement , production systems (in particular agriculture and forestry) and infrastructure
I'd say counties because there are way more of them
The Earth's atmosphere is mostly Nitrogen ~ 78% and Oxygen ~21% gas.
Answer:
b
Explanation:
when the sea levels rose above the shore
