NATS 1610 Lecture Notes - Chemical Evolution, Spontaneous Generation, Scientific Method
Document Summary
The living body- l7 chemical evolution tuesday/thursday october 1,3 2013. We don"t know: but by applying the scientific method we can develop hypothesis, that are at least partly testable through experiments, the hypothesis proposed to explain the origin of life. Are modified as new information is uncovered. Life is thought to begun between 3. 5-4 billion years ago: mostly an educated guess, oldest fossils about 3. 5 billion years old. Spontaneous generation theory: that some life forms came out of nothing: ex. The cotton trapped tiny particles floating in the air: dissolved the cotton using a mixture of ether and alcohol. Left the particles that settled to the bottom of the liquid: upon microscopic examination. Chemical evolution hypothesis: suggests life (and cells) evolved from chemicals . As chemical complexity increased over a period of 300 million years: a problem was that how can they prove this using the conditions that were around back then without causing today"s environment to interfere j00.
