Es the phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects
contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were
dephlogistonated and were then in their true form.
the phlogiston theory was accepted until the 18th century, when lavosier proved that combustion requires a gas that has mass.
phlogiston is evidence that
scientific knowledge is exact
scientific knowledge can evolve.
scientific knowledge is 100% proven.
scientific knowledge does not evolve.

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.