Terms : Hide Images
| 7205783582 | Population | The individuals that belong to the same species and live in a given area at a particular time. |  | 0 |
| 7205783937 | Community | All of the populations of organisms within a given area. |  | 1 |
| 7205785152 | 4 Factors that influence population size | # of Births # of Deaths Immigration (moving in) Emmigration (moving out) | 2 | |
| 7205786488 | Population Density | The number of individuals per unit area at a given time. |  | 3 |
| 7205788744 | Population Distribution | A description of how individuals are distributed with respect to one another. |  | 4 |
| 7205792184 | Random Distribution | Occurs when organisms have an unpredictable distribution, due to limited interaction. |  | 5 |
| 7205792373 | Uniform Distribution | Occurs when organisms are evenly spaced over an area they occupy, due to scarce resources and competition. | | 6 |
| 7205792374 | Clumped Distribution | Occurs when organisms clumped together in groups in order to survive, share resources, and provide protection for each other. (MOST COMMON TYPE) |  | 7 |
| 7205805802 | Limiting Resource | A resource that a population cannot live without and that occurs in quantities lower than the population would require to increase in size. |  | 8 |
| 7205806208 | Density-Independent Factors | A factor that has the same effect on an individual's probability of survival and the amount of reproduction at any population size. (ABIOTIC Factors- Severe Weather Patterns, Floods, Fires) |  | 9 |
| 7205806209 | Density-Dependent Factors | A factor that influences an individuals probability of survival and reproduction in a manner that depends on the size of the population. (BIOTIC Factors- Disease, Predation, and Competition) |  | 10 |
| 7205817930 | Carrying Capacity (K) | The limit of how many individuals in a population the environment can sustain. |  | 11 |
| 7205820810 | Population Growth Rate | The number of offspring an individual can produce in a given time period, minus the deaths of the indivudal or its offspring during the same period. | 12 | |
| 7205821271 | Exponential Growth | Growth in which populations of organisms experience increased growth as the population gets larger. As the population gets larger it grows faster resulting in a j-shaped curve. |  | 13 |
| 7205821424 | Logistic Growth | Growth model that describes a population whose growth is initially exponential, but slows as the population approaches the carrying capacity of the environment, which results in a S-shaped curve. |  | 14 |
| 7205833910 | Overshoot / Die Back | When a population becomes larger than the environment's carrying capacity. |  | 15 |
| 7205841630 | K-selected species | Species that possess relatively stable populations and tend to produce relatively low numbers of offspring; however, individual offspring tend to be quite large. EX= Elephant |  | 16 |
| 7205841942 | R-selected species | Species that have high growth rates, occupy less-crowded ecological niches and produce many offspring, each of which has a relatively low probability of surviving to adulthood. EX= Cockroaches | | 17 |
| 7205842155 | Survivorship Curve | A graph that represents the distinct patterns of species survival as a function of age. |  | 18 |
| 7205842376 | Type I Survivorship Curve | A pattern of survival over time which there is high survival throughout most of the life span, but then individuals start to die in large numbers as they approach old age. EX= Humans |  | 19 |
| 7205842377 | Type II Survivorship Curve | A pattern of survival over time in which there is a relatively constant decline in survivorship throughout most of the life span. EX= Squirrels | | 20 |
| 7205842606 | Type III Survivorship Curve | A pattern of survival over time in which there is low survivorship early in life with few individuals reaching adulthood. EX= Plants/Sea Turtles | | 21 |
| 7205857563 | Demography | The study of human populations and population trends. |  | 22 |
| 7205859466 | Immigration | The movement of people into a country or region, from another country or region. |  | 23 |
| 7205859824 | Emigration | The movement of people out of a country or region. |  | 24 |
| 7205861165 | Crude Birth Rate (CBR) | The number of births per 1,000 individuals per year. |  | 25 |
| 7205861421 | Crude Death Rate (CDR) | The number of deaths per 1,000 individuals per year. |  | 26 |
| 7205862108 | Doubling Time (Rule of 70) | The number of years it takes a population to double. Doubling Time (years)= 70/growth rate |  | 27 |
| 7205865216 | Global Population Growth Rate | [CBR - CDR]/10 (crude birth rate) - (crude death rate)/10 |  | 28 |
| 7205870340 | National Population Growth Rate | [(CBR + immigration) - (CDR + emigration)] / 10 [(CBR+ im) - (CDR+ em)] / 10 |  | 29 |
| 7205877751 | Total Fertility Rate (TFR) | An estimate of the average number of children that each woman in a population will bear throughout her childbearing years. |  | 30 |
| 7205878041 | Replacement-level fertility | The total fertility rate required to offset the average number of deaths in a population in order to maintain the current population size. |  | 31 |
| 7205882563 | Life Expectancy | The average number of years that an infant born in a particular year in a particular country can be expected to live, given the current average life span and death rate in that country. | 32 | |
| 7205882564 | Developed Country | A country with relatively high levels of industrialization and income. |  | 33 |
| 7205882565 | Developing Country | A country with relatively low levels of industrialization and income. | | 34 |
| 7205884839 | Infant Mortality | The number of deaths of children under 1 year of age per 1,000 live births. |  | 35 |
| 7205885528 | Child Mortality | The number of deaths of children under age 5 per 1,000 live births. |  | 36 |
| 7205805801 | Age Structure | A visual representation of the number of individuals within specific age groups for a country, typically expressed for males and females. |  | 37 |
| 7205888411 | Population Pyramid | An age structure diagram that is widest at the bottom and smallest at the top, typical of developing countries. |  | 38 |
| 7205890765 | Demographic Transition | The idea that as a country moves from a subsistence economy (farming) to industrialized and increased affluence (wealth) it undergoes a predictable shift in population growth. |  | 39 |
| 7205893079 | Preindustrial of Demographic Transition (Stage 1) | Population grows very slowly because of a high birth rate due to high infant mortality and a high death rate. (Slow Population Growth) |  | 40 |
| 7205893080 | Transitional Demographic Transition (Stage 2) | Population grows rapidly because birth rates are high and death rates drop because of improved food production and health. (Rapid Populaton Growth) | | 41 |
| 7205893471 | Industrial Demographic Transition (Stage 3) | Population growth slows as both birth and death rates drop because of improved food production, health, and education. (Stable Population Growth) | | 42 |
| 7205893472 | Postindustrial Demographic Transition (Stage 4) | Population growth levels off and then declines as birth rates equal and then fall below death rates. (Declining population growth) | | 43 |
| 7205906342 | Affluence | The state of having plentiful wealth including the possession of money, good, or property. |  | 44 |
| 7205907123 | Family Planning | The practice of regulating the number or spacing of offspring through the use of birth control. |  | 45 |
| 7205910616 | IPAT Equation | An equation used to estimate the impact of the human lifestyle on the environment. Impact=population x affluence x technology I=PAT |  | 46 |
