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The Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (6th ed.). London: John Murray. ISBN 978-1-4353-9386-8. Doolittle, W. F.; Bapteste, E. (2007). "Inaugural Article: Pattern pluralism and the Tree of Life hypothesis". Proceedings of the National Academy of Sciences. 104 (7): 2043 ...
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
2. In the Poaceae, an appendage terminating or on the back of glume s or lemma s of some grass spikelet s. 3. In the Geraniaceae, the part of the style that remains attached to the carpel that separates from the carpophore (column). 4. A generally straight, stiff pappus element, varying from stiffly bristle-like to hard and needle-like.
The earliest form of life on Earth arose at least 3.5 billion years ago. [1] [2] [3] Earlier physical evidences of life include graphite, a biogenic substance, in 3.7 billion-year-old metasedimentary rocks discovered in southwestern Greenland, [4] as well as, "remains of biotic life" found in 4.1 billion-year-old rocks in Western Australia.
Search for titles containing the word or using the prefix: acanthus etc. G ἄκανθος (ákanthos) thorny, spiny: Acanthus plant; Parorchis acanthus, a flatworm Munida acantha, a squat lobster; prickly ceratina, Ceratina acantha spiny dogfish, Squalus acanthias; Reinhardt's snake-eater, Polemon acanthias cotton thistle, Onopordum acanthium
At 4.2 light-years (1.3 parsecs, 40 trillion km, or 25 trillion miles) away from Earth, the closest potentially habitable exoplanet is Proxima Centauri b, which was discovered in 2016. [ 132 ] [ 133 ] This means it would take more than 18,100 years to get there if a vessel could consistently travel as fast as the Juno spacecraft (250,000 ...
The term "organism" (from the Ancient Greek ὀργανισμός, derived from órganon, meaning ' instrument, implement, tool ', ' organ of sense ', or ' apprehension ') [2] [3] first appeared in the English language in the 1660s with the now-obsolete meaning of an organic structure or organization. [3] It is related to the verb "organize". [3]
In biology, phylogenetics (/ ˌ f aɪ l oʊ dʒ ə ˈ n ɛ t ɪ k s,-l ə-/) [1] [2] [3] is the study of the evolutionary history of life using genetics, which is known as phylogenetic inference. It establishes the relationship between organisms with the empirical data and observed heritable traits of DNA sequences, protein amino acid sequences ...