A single hectare of tropical forest can contain 42,000 different species of insects, up to 807 trees of 313 species, and 1,500 species of land plants (Embryophyta).
It is likely that tropical forests contain many millions of species of plants, insects, and microorganisms that have yet to be discovered.
There are as many as 12 countries in Europe with monarchies.
These include Andorra, Belgium, Denmark, Spain, Liechtenstein, Luxembourg, Monaco, the Netherlands, Norway, Sweden, the Vatican and the United Kingdom.
Although some classify Elbrus as an Asian peak, which would give the title of Europe's highest peak to Mont Blanc, most scientists consider Elbrus a European peak.
