Human populations Flashcards
In four steps the demographic transistion causes countries population to go from what to what?
small, slow growing to large, slow growing
The human population is currently closest to what?
7 billion
population momentum refers to what?
future growth of population due to large young classes of individuals who have yet to reproduce
the greatest contributor to global human population growth is
population momentum
What is carrying capacity?
population size of an organism that can be sustained by the habitat indefinitely
What is Malthus?
an English 18th century economist that wrote about potential problems of human population growth
food limits, disease attacks are what dependent factors?
density-dependent factors
weather, volcanoes, and tsunamis are what factors?
density-independent factors
What is natality?
Patterns in births
What is Iteroparous?
each individual reproduces more than once
What is semelparous?
each indiviual reproduces only once in lifetime
