chapter 4 and 5 biology
little parental care
r stategy
example bacteria
r strategy
fast maturing
r strategy
many offspring
r strategy
what are the characteristics of populations and how are they distributed?
size, population density, population distribution, age structure and reproduction base.
industrial country
slow growth
r straety
strategist grow expotenially when the environment conditions allow them to reproduce
k strategy
strategist the population density is close to the carrying capacity
what is the approximate population difference between developing countries that have low fertility rates and developing countries that have high fertility rates in 2050
1.5 billion
what is the projected population by 2050
9.6 billion
density independent
Any factor limiting the size of a population whose effect is not dependent on the number of individuals in the population. example is earthquake
example elephant
k strategy
long life span
k strategy
what might be the consequence of continued population growth
climate change, war
2 factors affecting world population growth
death increasing and fertility rates declining
competition
density dependent
flooding
density dependent
parasite
density dependent
preditation
density dependent
what is the difference between density dependent and density indepdent
density dependent affects only populations of certain sizes and density independent affect populations in the same way regardless of the size.
extreme cold
density independent
fire
density independent
3 characteristics of population
density, birth rate and death rate
density depdent
factors that effect population. examples- predators, disease
developing country
fast growth
what aspects affect human growth
genetic factors, lifestyle choices, and medications