Ecology (from Greek: οἶκος, "house"; -λογία, "study of") is the scientific study of the relations that living organisms have with respect to each other and their natural environment. Variables of interest to ecologists include the composition, distribution, amount (biomass), number, and changing states of organisms within and among ecosystems. Ecosystems are hierarchical systems that are organized into a graded series of regularly interacting and semi-independent parts (e.g., species) that aggregate into higher orders of complex integrated wholes (e.g., communities). Ecosystems are sustained by the biodiversity within them. Biodiversity is the full-scale of life and its processes, including genes, species and ecosystems forming lineages that integrate into a complex and regenerative spatial arrangement of types, forms, and interactions. Ecosystems create biophysical feedback mechanisms between living (biotic) and nonliving (abiotic) components of the planet. These feedback loops regulate and sustain local communities, continental climate systems, and global biogeochemical cycles.
Avram Noam Chomsky (/ˈnoʊm ˈtʃɒmski/; born December 7, 1928) is an American linguist, philosopher,cognitive scientist, historian, and activist. He is an Institute Professor and Professor (Emeritus) in the Department of Linguistics & Philosophy at MIT, where he has worked for over 50 years. Chomsky has been described as the "father of modern linguistics" and a major figure of analytic philosophy. His work has influenced fields such as computer science, mathematics, and psychology.
Ideologically identifying with anarcho-syndicalism and libertarian socialism, Chomsky is known for his critiques of U.S. foreign policy and contemporary capitalism, and he has been described as a prominent cultural figure. His media criticism has included Manufacturing Consent: The Political Economy of the Mass Media (1988), co-written with Edward S. Herman, an analysis articulating the propaganda model theory for examining the media.
According to the Arts and Humanities Citation Index in 1992, Chomsky was cited as a source more often than any other living scholar from 1980 to 1992, and was the eighth most cited source overall. Chomsky is the author of over 100 books. He is credited as the creator or co-creator of the Chomsky hierarchy, the universal grammar theory, and the Chomsky–Schützenberger theorem.
Marvin Pentz Gay, Jr. (April 2, 1939 – April 1, 1984), better known by his stage name Marvin Gaye (he added the 'e' as a young man), was an acclaimed American singer-songwriter and musician with a three-octave vocal range, who achieved major success in the 1960s and 1970s as an artist for the Motown Records label. He was shot dead by his father on April 1, 1984.
Starting his career as a member of the doo-wop group The Moonglows in the late 1950s, he ventured into a solo career after the group disbanded in 1960, signing with Motown Records subsidiary, Tamla. He started off as a session drummer, but later ranked as the label's top-selling solo artist during the 1960s. He was crowned "The Prince of Motown" and "The Prince of Soul". because of solo hits such as "How Sweet It Is (To Be Loved by You)", "Ain't That Peculiar", "I Heard It Through the Grapevine," and his duet singles with singers such as Mary Wells and Tammi Terrell.
His work in the early- and mid-1970s included the albums, What's Going On, Let's Get It On, and I Want You, which helped influence the quiet storm, urban adult contemporary, and slow jam genres. After a self-imposed European exile in the early 1980s, Gaye returned on the 1982 Grammy-Award winning hit, "Sexual Healing" and the Midnight Love album before his death.