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The Articles of Confederation and Perpetual Union was an agreement among the 13 states of the United States, formerly the Thirteen Colonies, that served as the nation's first frame of government. It was debated by the Second Continental Congress at Independence Hall in Philadelphia between July 1776 and November 1777, and finalized by the ...
The arthropod head problem is popularly known as the endless dispute, the title of a famous paper on the subject by Jacob G. Rempel in 1975, [6] referring to its seemingly intractable nature. Although some progress has been made since that time, the precise nature of especially the labrum and the pre-oral region of arthropods remain highly ...
The Articles of Confederation created a loose union of states. The confederation's central government consisted of a unicameral Congress with legislative and executive function, and was composed of delegates from each state in the union.
Head of a European hornet (Vespa crabro). In insects, head is a preferred term. The insect head consists of five segments, including three (the labial, maxillary and mandibular) necessary for food uptake, which are altogether known as the gnathocephalon and house the suboesophageal ganglion of the brain, as well as the antennal segment, and an ocular segment, as well as a non segmented fused ...
The human head consists of a fleshy outer portion, which surrounds the bony skull. The brain is enclosed within the skull. There are 22 bones in the human head. The head rests on the neck, and the seven cervical vertebrae support it. The human head typically weighs between 2.3 and 5 kilograms (5.1 and 11.0 lb) Over 98% of humans fit into this ...
She ultimately rose to head the physics department at Berlin’s Kaiser Wilhelm Institute for Chemistry, a post she retained even after her Nazi-era dismissal from the University of Berlin.
Ten of Obama's greatest accomplishments. When Barack Obama ran for president in 2008, his campaign slogan was "Change we can believe in." He ran on the platform that called for the country to come ...
Cephalization is a characteristic feature of the bilaterians, a large group containing the majority of animal phyla. [3] These have the ability to move, using muscles, and a body plan with a front end that encounters stimuli first as the animal moves forwards, and accordingly has evolved to contain many of the body's sense organs, able to detect light, chemicals, and gravity.