Search results
Results from the WOW.Com Content Network
Common descent is a concept in evolutionary biology applicable when one species is the ancestor of two or more species later in time. According to modern evolutionary biology, all living beings could be descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth.
Many different species of insects have mouthparts derived from the same embryonic structures, indicating that the mouthparts are modifications of a common ancestor's original features. These include a labrum (upper lip), a pair of mandibles , a hypopharynx (floor of mouth), a pair of maxillae , and a labium .
The species found in one area of a continent are more closely allied with species found in other regions of that same continent than to species found on other continents. Darwin noted that barriers to migration played an important role in the differences between the species of different regions.
The ultimate cause of convergence is usually a similar evolutionary biome, as similar environments will select for similar traits in any species occupying the same ecological niche, even if those species are only distantly related. In the case of cryptic species, it can create species which are only distinguishable by analysing their genetics ...
At first glance, the US and UK elections may seem worlds apart, but in looking back on the campaigns and results, The Independent’s data correspondent Alicja Hagopian discovers some key similarities
The Sonoran pronghorn has an estimated population of fewer than 300 in the United States and 200–500 in Mexico, while there are approximately 200 Peninsula pronghorn in Baja California. [2] Populations of the Sonoran pronghorn in Arizona and Mexico are protected under the Endangered Species Act (since 1967), and a recovery plan for this ...
British Prime Minister Margaret Thatcher and US President Ronald Reagan.Their strong bond epitomised UK–US relations in the late 20th century.. The Special Relationship is a term that is often used to describe the political, social, diplomatic, cultural, economic, legal, environmental, religious, military and historic relations between the United Kingdom and the United States or its ...
(derogatory) promiscuous woman (US & UK also: slut) a general insult directed at someone of either sex A product from the iron-smelting blast furnace; mainly used in tarmac production slash (colloq.) an act of urinating ("to have a slash") to cut drastically the symbol '/' (orig. US) (also virgule, solidus; UK also: oblique, stroke)