da huang caoling mancano 9 anni
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finding the doubling time of a pop.
doubling time (in years)= 70/growth rate
Humans are not unique in their ability to alter their environment. The ability ro alter their environment to increase its carrying capacity, sometimes to the detriment of other species.
Long-term exponential growth carries with it the potential risk of famine, disease, and large-scale death, as well as social consequences of crowding such as increased crime.
