chapter 4 and 5 biology

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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


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