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The number of species of flowering plants is estimated to be in the range of 250,000 to 400,000. [26] [27] [28] This compares to around 12,000 species of moss [29] and 11,000 species of pteridophytes. [30] The APG system seeks to determine the number of families, mostly by molecular phylogenetics. In the 2009 APG III there were 415 families. [31]
Theophrastus. Theophrastus (/ ˌθiː.əˈfræstəs /; Ancient Greek: Θεόφραστος, romanized: Theóphrastos, lit. 'godly phrased'; c. 371 – c. 287 BC) [3] was a Greek philosopher and the successor to Aristotle in the Peripatetic school. He was a native of Eresos in Lesbos. [4] His given name was Τύρταμος (Túrtamos); his ...
A domain contains one or more kingdoms. Intermediate minor rankings are not shown. In biology, a kingdom is the second highest taxonomic rank, just below domain. Kingdoms are divided into smaller groups called phyla (singular phylum). Traditionally, some textbooks from the United States and Canada used a system of six kingdoms (Animalia ...
Cyanobacteria (blue-green algae) Algae (UK: / ˈælɡiː / AL-ghee, US: / ˈældʒiː / AL-jee; [ 3 ]sg.: alga / ˈælɡə / AL-gə) are any of a large and diverse group of photosynthetic, eukaryotic organisms. The name is an informal term for a polyphyletic grouping that includes species from multiple distinct clades.
Bell Labs [a] is an American industrial research and development (R&D) company credited with the development of radio astronomy, the transistor, the laser, the photovoltaic cell, the charge-coupled device (CCD), information theory, the Unix operating system, and the programming languages B, C, C++, S, SNOBOL, AWK, AMPL, and others.
Salem State University [132] is the largest of the nine schools comprising the state university system in Massachusetts (the five University of Massachusetts campuses are a separate system), with 7,500 undergraduates and 2,500 graduate students; [133] its five campuses encompass 115 acres (0.47 km 2) and include 33 buildings. The Salem State ...
Fusion power. Fusion power is a proposed form of power generation that would generate electricity by using heat from nuclear fusion reactions. In a fusion process, two lighter atomic nuclei combine to form a heavier nucleus, while releasing energy. Devices designed to harness this energy are known as fusion reactors.
1842: Adriano Balbi, System of universal geography, founded on the works of Malte-Burn and Balbi: Cities, Towns, &c., in Syria and Palestine. Santa Saba, 8 or 9 miles S.E. of Jerusalem, a monastery remarkable for its situation on a height, which rises precipitously several hundred feet from the deep valley of the brook Kedron. Beside it are ...