... according to the funk and Wangnall Dictionary is a grouping of individuals subject to the processes of birth, death, and migration.. During the first 2 million years of our history the human population had very little effect upon the overall world ecosystem, with no more than 10 million members ... medicine or technology, this catasophy would have been unheard of. Triumph over disease on a worldwide scale did not come until 20th century with the introduction of antibiotics and DDT. DDT is a very active, broad-spectrum pesticide, particularly effective against beetles, moths and butterfli...

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