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Electronic flashcards may have a three-sided card. [2] Such a card has three fields, Q, A, and A*, where Q & A are reversed on flipping, but A* is always in the answer—the two "sides" are thus Q/A,A* and A/Q,A*. These are most often used for learning foreign vocabulary, where the foreign pronunciation is not transparent from the foreign writing.
Alfred Russel Wallace (8 January 1823 – 7 November 1913) was an English [1] [2] [3] naturalist, explorer, geographer, anthropologist, biologist and illustrator. [4] He independently conceived the theory of evolution through natural selection; his 1858 paper on the subject was published that year alongside extracts from Charles Darwin's earlier writings on the topic.
This is an annotated list of biological websites, including only notable websites dealing with biology generally and those with a more specific focus. Ask A Biologist - has been hosted by ASU School of Life Sciences since 1997.
Cell biology (also cellular biology or cytology) is a branch of biology that studies the structure, function, and behavior of cells. [1] [2] All living organisms are made of cells. A cell is the basic unit of life that is responsible for the living and functioning of organisms. [3] Cell biology is the study of the structural and functional ...
[1] [2] The group was first suggested by Simpson and Patterson in 1999 [3] [4] and the name latinized and assigned a rank by Thomas Cavalier-Smith in 2002. It contains a variety of free-living and symbiotic protists, and includes some important parasites of humans such as Giardia and Trichomonas . [ 5 ]
In evolutionary biology, function is the reason some object or process occurred in a system that evolved through natural selection.That reason is typically that it achieves some result, such as that chlorophyll helps to capture the energy of sunlight in photosynthesis.