Unit 4: Human Population Dynamics

doubling time = 70 + % growth rate

British economist, predicted that human population size would eventually outgrow the available food supply if humans did not purposefully limit births

in his book The Population Bomb, he predicted that population growth would soon lead to famine and that conflict over scarce resources would eventually consume civilization by the end of the 20th century

summarizes how the environmental impact (I) results from the interactions among population size (P), affluence (A), and technology (T)

the study of human populations, how they change with time, and the main factors causing this change

one of the main factors useful for predicting population dynamics and environmental impacts; the absolute number of individuals

one of the main factors useful for predicting population dynamics and environmental impacts; reflect the spatially uneven nature of human population on earth

one of the main factors useful for predicting population dynamics and environmental impacts; describes the number of individuals of each age class within a population and are especially valuable for predicting future population change

the ratios of males to females in a population, affect population dynamics

the number of births per 1,000 individuals per year

the number of deaths per 1,000 individuals per year

Global Pop. Growth Rate = CBR - CDR / 10

(CBR + immigration) - 9CDR + emigration) / 10 or (births - deaths) + (immigration - emigration) / 10

the average number of children born per woman during her lifetime

the TFR that keeps the size of a population stable (TFR = 2.1)

a theoretical model of economic and cultural change that explains the declining death rates and birth rates that occur when a nation becomes industrialized

death rates are high (disease is widespread), and birth rates are also high (people are compensating for high infant mortality)

declining death rates due to improved medical care and food production

birth rates decline as a result of increased opportunities for women and access to birth control

the final stage in which both birth and death rates have fallen to low and stable levels

the ecological footprint that the Earth can support

require attention to population growth and resource consumption