How did the distribution of the poison-level traits change from 200 generations ago to 50 generations ago?

The mutant trait became more common because the cold environment made long hair an adaptive trait. The rabbits with longer hair were able to live long enough to reproduce, while the rabbits with shorter hair were more likely to die before reproducing. The long-haired rabbits had offspring with long hair, so it became a common trait in the population.

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> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.