The Human Population Flashcards
The current population stands at
7.8 billion
define demographic transition
the shift from high birth and death rates to low births and death rates
how have death and birth rates changed in developing nations
death rates have dropped and birth rates are still high
define age structure
the proportion of individuals in different age-groups
define population momentum
the continued growth that occurs despite reduction of the fertility rate to replacement level
define an ecological footprint
estimate of the amount of land required by each person/country to produce all the resources it consumes and to absorb all its wastes
define biocapacity
Earth’s capacity to renew resources
about how many hectare are available for human use?
12.2 billion
define sustainability
goal of developing, managing, and conserving Earth’s resources in ways that meet the needs of today without compromising future generations
the global ecological footprint already
exceeds a sustainable level
where is the disparity between resource consumption found?
in more and less developed nations
