In addition to the heterotrophs, there are many kinds of autotrophic bacteria, able to produce their own food. These autotrophs may be photosynthetic or chemosynthetic and may or may not use oxygen in their synthetic pathways. Cyanobacteria are the largest group of photosynthetic eubacteria. The cells of these bacteria are often much larger than other bacteria, which in the past led this group to be classified as algae rather than bacteria. In fact, cyanobacteria are still sometimes referred to as blue-green algae.
Polyglotism or polyglottism is the ability to master, or the state of having mastered, multiple languages. The word is a synonym of multilingualism, but, in recent usage, polyglot is sometimes used to refer to a person who learns multiple languages as an avocation.
For the processing of language by the human brain, see Language processing in the brain. Natural language processing (NLP) is a field of computer science, artificial intelligence, and computational linguistics concerned with the interactions between computers and human (natural) languages.As such, NLP is related to the area of humanâcomputer interaction.Many challenges in NLP involve natural language understanding, that is, enabling computers to derive meaning from human or natural language input, and others involve natural language generation.n automated online assistant providing customer service on a web page, an example of an application where natural language processing is a major component.