range exponential growth
birth rate, death rate
Earth’s carrying capacity of 15,000,000,000 humans
birth rate, death rate, population density = number / range
limiting factors on population growth
population density, death rate – birthrate, density dependent(hunting, predators, food supply) and independent ( disasters – hurricane,tornado, fires) factors. Population distribution by age.
survival of the fittest – strength, smart – intelligence, adaptation – color, camoflage. Lamarck – Selective Use, Darwin – Natural Selection