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1 天前 · The red fox ( Vulpes vulpes) is the largest of the true foxes and one of the most widely distributed members of the order Carnivora, being present across the entire Northern Hemisphere including most of North America, Europe and Asia, plus parts of North Africa. It is listed as least concern on the IUCN Red List. [1] .
1 天前 · The koala ( Phascolarctos cinereus ), sometimes called the koala bear, is an arboreal herbivorous marsupial native to Australia. It is the only extant representative of the family Phascolarctidae and its closest living relatives are the wombats.
22 小時前 · The 17 Sustainable Development goals. Public relations. History. Results and outcomes. Examples of progress. Challenges. Funding. See also. References. External links. Sustainable Development Goals. The 2030 Agenda for Sustainable Development, adopted by all United Nations members in 2015, created 17 world Sustainable Development Goals ( SDGs ).
2 天前 · Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') [1] is the scientific theory that Earth 's lithosphere comprises a number of large tectonic plates, which have been slowly moving since about 3.4 billion years ago. [2] .
2024年5月30日 · Bessel functions of the second kind and the spherical Bessel functions of the second kind are sometimes denoted by N n and n n, respectively, rather than Y n and y n. Bessel functions of the first kind: J α Plot of the Bessel function of the first kind J n (z) with n = 0.5 in the complex plane from −2 − 2i to 2 + 2i Plot of Bessel function of the first kind, J α (x), for integer orders ...
1 天前 · The United Nations Educational, Scientific and Cultural Organization (UNESCO) is a specialized agency of the United Nations (UN) with the aim of promoting world peace and security through international cooperation in education, arts, sciences and culture. It has 194 member states and 12 associate members, as well as partners in the non-governmental, intergovernmental and private sector.
2024年5月29日 · A research article on dog genomics published in Science/AAAS defines modern dog breeds as "a recent invention defined by conformation to a physical ideal and purity of lineage". [1] According to BigThink, over 40% of the world’s dog breeds come from the United Kingdom, France and Germany.
