Yes
Yes, a place can belong to more than one region depending on the context. For example, a city might be part of multiple administrative regions, such as a state and a metropolitan area, or it may be classified in different cultural or geographical regions. Additionally, in some cases, regions can overlap, allowing a location to be identified with more than one regional category.
biodiversity
Ontario. If your asking regions, not provinces than I don't know
A region is an area that shares more than one characteristic
A zone is a specific area defined by certain characteristics or boundaries, often used for administrative or security purposes. A region, on the other hand, is a broader geographic area with common characteristics such as climate, culture, or language. Zones are typically smaller and more focused than regions.
Sparta has more geographic area than Athens. Athens is located in the region of Attica in central Greece, while Sparta is located in the region of Laconia in the southern part of the Peloponnese.
The US produces more corn than any other country. The cornbelt is an area through the Midwest of the US that produces the most corn in the country.
If the signnn is less than then it is below the line , if it is more than than it is above the line, that is the shaded region, If the signnn is less than then it is below the line , if it is more than than it is above the line, that is the shaded region,
A region is an area that shares more than one characteristic
There is no consistency in usage.
An oasis is an area of a desert with a permanent water source and more vegetation than the surrounding desert.
Actually, more than half of Europe's countries belong to the European Union. It is not important how many countries belong to it, even when less than half of Europe's countries did belong to it.