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The warm deserts of North America include The Mojave Basin and Range, the Sonoran desert, and the Chihuahuan desert. These areas have a tropical desert climate, and are known as the hottest and driest place on the continent. This is due to the continental interior location on the leeward side of mountains, with constant subtropical high pressures.
This data is displayed as series of interactive map layers in an easy to use map viewer format. Most layers in the North American Environmental Atlas are at a scale of 1:1:10,000,000 or finer. [citation needed] The variety of layers in the Atlas continues to expand in order to support analysis of environmental conditions.
The health of an aquatic ecosystem is degraded when the ecosystem's ability to absorb a stress has been exceeded. A stress on an aquatic ecosystem can be a result of physical, chemical or biological alterations to the environment. Physical alterations include changes in water temperature, water flow and light availability.
Microplastic pollution is a widespread problem in the North Atlantic Ocean; in 2018, samples of pelagic fish species native to the NEUS Continental Shelf sampled from Portugal found microplastic contamination in 49% of the fish. [11] Ocean acidification is also a threat to the NEUS ecosystem, particularly organisms with carbonate shells.
With over 11 million gallons, the largest aquarium in the United States is the Georgia Aquarium. [1] [2]This is a list of existing public aquariums [3] in the United States, some of which are unaccredited.
Of North American freshwater species, an estimated 48.5% of mussels, 22.8% of gastropods, 32.7% of crayfishes, 25.9% of amphibians, and 21.2% of fish are either endangered or threatened. [24] Extinction rates of many species may increase severely into the next century because of invasive species, loss of keystone species, and species which are ...