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Hace 2 días · The first documented use of the phrase "United States of America" is a letter from January 2, 1776. Stephen Moylan, a Continental Army aide to General George Washington, wrote to Joseph Reed, Washington's aide-de-camp, seeking to go "with full and ample powers from the United States of America to Spain" to seek assistance in the Revolutionary War effort.
Hace 2 días · Brachycera. An Anthomyiidae species showing characteristic dipteran features: large eyes, small antennae, sucking mouthparts, single pair of flying wings, hindwings reduced to clublike halteres. Flies are insects of the order Diptera, the name being derived from the Greek δι- di- "two", and πτερόν pteron "wing".
Hace 5 días · Sustainable energy. An electric car or electric vehicle ( EV) is a passenger automobile that is propelled by an electric traction motor, using only energy stored in on-board batteries. Compared to conventional internal combustion engine (ICE) vehicles, electric cars are quieter, more responsive, have superior energy conversion efficiency and no ...
Hace 3 días · Serbia is a country of rich ecosystem and species diversity—covering only 1.9% of the whole European territory, Serbia is home to 39% of European vascular flora, 51% of European fish fauna, 40% of European reptiles and amphibian fauna, 74% of European bird fauna, and 67% European mammal fauna. [185]
Hace 2 días · Atrial fibrillation ( AF, AFib or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by rapid and irregular beating of the atrial chambers of the heart. [11] [12] It often begins as short periods of abnormal beating, which become longer or continuous over time. [4]
Hace 2 días · They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust.
Hace 3 días · Colombia, [b] officially the Republic of Colombia, [c] is a country primarily located in South America with insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuela to the east and northeast, Brazil to the southeast, Ecuador and Peru to the south and southwest, the Pacific Ocean to the ...
