chapter 4 Flashcards
(11 cards)
What happens to an age structure graph if the country is not growing?
It will stabilize
What problem does immigration and emigration pose for demographers?
They find it difficuilt to make predections about a population
what type of reproductive strategy would a bacteria employ, determined by small size and short life span?
R-strategies
what type of strategy would the tortoises of the Galapagos Islands and sequios of california used based on their long life span?
K-strategist
What is the shape of a population that grows until it reaches its carrying capacity?
S-shaped curve
What type of influence does density independant factors have on a population density?
none
What type of growth does an unrestiricted population have?
exponential
Name the population control factors whose effects increase as the population size increases?
density dependent
What are the things demographers collect and study when it comes to human population?
age structure geographic distribution and growth rate
List characteristics of a rapid life history pattern
small body size, mature rapidly, reproduce early, have a short life span
Be able to list several density dependant factors that affect the population growth
predation, disease, parasites, and competition