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
To stop any ofter wars form happening in Europe.
This is true.
The definition of megalopolis is that it is a large urban area, huge and densely populated. St. Petersburg is definitely one, however, Miami is relatively small compared to other megalopolises so it might not fall within that category.
A biome is defined as the large ecological area where the formation of plants and animals with common characteristics gather due to the similar climates. If I were an ecologist, and i will be determining whether an entire river and lake biome is being threatened by human activity, the indicator species that i might look for are the ones that have been introduced into the biome.