Search results
Results from the WOW.Com Content Network
Later plants from the Permian period did as well. [2] A "great diversity" of plants composed the Permian flora of Arizona. They left fossils in the area now occupied by many of the trails leading down into the Grand Canyon. [3] Rutiodon. With the start of the Mesozoic era, geologic forces elevated the topography of the state's southwestern ...
The wildlife of Iran include the fauna and flora of Iran. One of the most famous animals of Iran is the critically endangered Asiatic cheetah ( Acinonyx jubatus venaticus ), which today survives only in Iran.
Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.
In 1895, J. A. Allen described a mammal collection from southeastern Arizona, "On the headwaters of the San Pedro, in Sonora, a colony of a dozen or more had their lodges up to 1893, when a trapper nearly exterminated them. All the streams in the White Mountains have beaver dams in them, although most of the animals have been trapped."
The overfishing list reflects species that have an unsustainably high harvest rate. NOAA also keeps a list of overfished stocks. Those are species that have a total population size that is too low.
A significant concentration of ironwood (also known as desert ironwood, Olneya tesota) trees are found in the monument, along with two federally recognized endangered animal and plant species. More than 200 Hohokam archaeological sites have been identified in the monument, dated between 600 and 1450.
Last year, when Phoenix endured its hottest summer in recorded history — with a record 31 straight days of temperatures at or above 110 F — stark images emerged of saguaro cacti that had ...
Small, primitive maize cobs have been found at five different sites in New Mexico and Arizona. These sites encompass a wide climatic range, from the Tucson basin in the Arizona desert, at an elevation of 700 m (2300 ft), to a rocky cave on the Colorado Plateau at 2200 m (7200 ft). This variation suggests that the primitive maize grown in these ...