For 10 points—name this since theory that states living things arise without outside intervention from non- living things.
In the eighteenth century, John Needham and Lazzaro Spallanzani performed experiments involving microbes and soups to verify or disprove this theory and the existence of a "life force." Although Francisco Redi had disproved the theory for animals in the seventeenth century with an experiment involving meat and maggots, it was not until 1864 that Louis Pasteur disproved it for microbes by using swan-neck flasks. For 10 points—name this since theory that states living things arise without outside intervention from non- living things.
In the eighteenth century, John Needham and Lazzaro Spallanzani performed experiments involving microbes and soups to verify or disprove this theory and the existence of a "life force."
{spontaneous generation} [or {abiogenesis}]