SnailA snail is a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name snail is also used for most of the members of the molluscan class Gastropoda that have a coiled shell that is large enough for the animal to retract completely into. When the word "snail" is used in this most general sense, it includes not just land snails but also numerous species of sea snails and freshwater snails.
Atlantic slave tradeThe Atlantic slave trade or transatlantic slave trade involved the transportation by slave traders of enslaved African people, mainly to the Americas. The outfitted European slave ships of the slave trade regularly used the triangular trade route and its Middle Passage, and existed from the 16th to the 19th centuries. The vast majority of those who were transported in the transatlantic slave trade were people from Central and West Africa who had been sold by West African slave traders to mainly Portuguese, British, Spanish, Dutch, and French slave traders.
MadagascarMadagascar, officially the Republic of Madagascar, is an island country lying off the southeastern coast of Africa. It is the world's fourth largest island, the second-largest island country and the 46th largest country in the world. Its capital and largest city is Antananarivo. Madagascar consists of an eponymous main island and numerous smaller peripheral islands.
Scientific literacyScientific literacy or science literacy encompasses written, numerical, and digital literacy as they pertain to understanding science, its methodology, observations, and theories. Scientific literacy is chiefly concerned with an understanding of the scientific method, units and methods of measurement, empiricism and understanding of statistics in particular correlations and qualitative versus quantitative observations and aggregate statistics, as well as a basic understanding of core scientific fields, such as physics, chemistry, biology, ecology, geology and computation.
Reaching definitionIn compiler theory, a reaching definition for a given instruction is an earlier instruction whose target variable can reach (be assigned to) the given one without an intervening assignment. For example, in the following code: d1 : y := 3 d2 : x := y d1 is a reaching definition for d2. In the following, example, however: d1 : y := 3 d2 : y := 4 d3 : x := y d1 is no longer a reaching definition for d3, because d2 kills its reach: the value defined in d1 is no longer available and cannot reach d3.
Rebound effect (conservation)In conservation and energy economics, the rebound effect (or take-back effect) is the reduction in expected gains from new technologies that increase the efficiency of resource use, because of behavioral or other systemic responses. These responses diminish the beneficial effects of the new technology or other measures taken. A definition of the rebound effect is provided by Thiesen et al. (2008) as, “the rebound effect deals with the fact that improvements in efficiency often lead to cost reductions that provide the possibility to buy more of the improved product or other products or services.
Black peopleBlack is a racialized classification of people, usually a political and skin color-based category for specific populations with a mid to dark brown complexion. Not all people considered "black" have dark skin; in certain countries, often in socially based systems of racial classification in the Western world, the term "black" is used to describe persons who are perceived as dark-skinned compared to other populations.
SomalisThe Somalis (Soomaalida 𐒈𐒝𐒑𐒛𐒐𐒘𐒆𐒖, صوماليون) are an ethnic group native to the Horn of Africa who share a common ancestry, culture and history. The East Cushitic Somali language is the shared mother tongue of ethnic Somalis, which is part of the Cushitic branch of the Afroasiatic language family, and are predominantly Sunni Muslim. They form one of the largest ethnic groups on the African continent, and cover one of the most expansive landmasses by a single ethnic group in Africa.
