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Hopkins' bioclimatic law states that in North America east of the Rockies, a 130-m (400-foot) increase in elevation, a 4° change in latitude North (444.48 km), or a 10° change in longitude East (two-thirds of a time zone) will cause a biological event to occur four days later in the spring or four days earlier in the fall. [1]
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Flocks of black birds have been spotted in backyards and parks over the past few weeks in the Triangle, causing many of us to do a double take when we leave our homes or pass a large, grassy field ...
The cardoon (Cynara cardunculus / ˈ s ɪ n ər ə k ɑːr ˈ d ʌ n k j ʊ l ə s /), [2] [3] also called the artichoke thistle, is a thistle in the family Asteraceae.It is a naturally occurring species that also has many cultivated forms, including the globe artichoke.
Sesbania grandiflora is a leguminous tree of family Fabaceae.It is fast-growing and soft-wooded, and it grows to heights of 5–20 metres (16–66 feet). The leaves are regular and rounded, and grow to 15–30 cm (6–12 in) long, with leaflets in 10–20 pairs or more and an odd one.
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The most likely major predator of eggs and nestlings that disappear is the raccoon which, during its nocturnal foraging, is a notorious enemy of nearly any kind of birds nest. [6] [5] [265] It is also known that unidentified large snakes, probably consisting of the same species that the red-tails so readily predate during broad daylight, will ...
English: Perspective map not drawn to scale. LC Panoramic maps (2nd ed.), 348 Available also through the Library of Congress Web site as a raster image. Indexed for points of interest. Vault AACR2: 100; 651/1; 700/1; 710/2