Maps depicting environmental degradation across planet.
The term “big cat” is are commonly used to relate to any of the five species of the genus Panthera: lion, tiger, jaguar, leopard, and snow leopard. Except for the snow leopard, these big cat species can roar. A more broad interpretation of the term covers species outside of Panthera including the cougar, clouded leopard, Sunda clouded leopard, cheetah and even the several lynxes species. However, these added species also do not roar.
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According to the U.S. Forest Service report, more than 640 various species of trees in the United States, 186 of which are endemic. Maps of tree diversity in the U.S. include the total species richness and endemic species of trees.
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North America contains the most significant number of oak species, with around 90 growing in the U.S., while Mexico has 160 species, of which 109 are endemic. In the United States, the highest diversity of oak species occurs in the eastern states.
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The face of our planet is shifting continuously by geological processes. Splitting supercontinent Pangaea, these tectonic plates have arranged the planet’s surface into 7 continent landmasses and 5 oceans. Here is a visualization of the significant events on planet Earth through its four billion year history.
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According to the map, forest heights decrease at a higher elevation and are highest at low latitudes, decreasing in height the farther they are from the tropics (except 40° south latitude in southern temperate rainforests in Australia and New Zealand). Moreover, the highest forests are concentrated in mountain areas.
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The maps are based on distance from cities, roads, railways, and airports. The green areas represent places where travel to the city, road and other transportation facilities can be measured in hundreds of kilometers.
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The road system of the U.S. surpasses four million miles in combined length, plus numerous public line roads (8.3 million miles), other service roads, and off-road driving trails.
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Autumn foliage is a phenomenon that changes the green leaves of deciduous trees. By the end of October, yellow, orange, red, and brown varieties dominate, showing the coming of peak fall foliage in the western and northern U.S. When it comes to the end of November, all except the southern counties of the U.S. are past the peak point.
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10 developed nations contribute more than 68% of global greenhouse gas emissions. China is the biggest emitter at 26% of global greenhouse gas emissions, accompanied by the U.S. at 13%, the EU at 8%, and India at 7%.
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3 percent (4.5 million km2 / 2.8 million mi2) of the Earth’s land cover is occupied by urban areas. However, even non-urban areas contain roads, railroads, and other marks of human presence. Only ten percent of the world is indeed a wilderness.
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