Chemical reactions happen around us all the time; whether we're cooking or cleaning or digesting our food! With these chemistry projects, you'll be able to experiment with color-changing chemicals, test the nutrients of different food substances, grow crystals, make invisible ink, and much more.
demagogue (plural demagogues) (pejorative) A political orator or leader who gains favor by pandering to or exciting the passions and prejudices of the audience rather than by using rational argument. quotations â¼ 1938, Aristophanes, The Knights, 424 BC, tr.
Deme (biology) In biology, a deme is a term for a local population of polytypic species that actively interbreed with one another and share a distinct gene pool. When demes are isolated for a very long time, they can become distinct subspecies or species. The term deme is mainly used in evolutionary biology and is often used as a synonym for population. In evolutionary computation, a deme often refers to any isolated subpopulation subjected to selection as a unit rather than as individuals. A deme in biological evolution is conceptually related to a meme in cultural evolution. Examples Various populations of gorillas can be understood by their geographical separation and have been assessed to determine distinct and disjointed gene pools.