Answer:
Georges-Louis Leclerc, Comte de Buffon, did not propose an "encounter theory." He was known for his work on natural history and his ideas about the age of the Earth and the origin of life. He proposed that life originated spontaneously in the hot oceans of the early Earth and that species changed through migration and adaptation to new environments. His ideas were based on observation and speculation, but he did not propose a theory of encounters between different species.
