Barrons AP Environmental Science

phosphorus mining. Answer ...

UNIT III Population (10%–15%) Areas on Which You Will Be Tested A. POPULATION BIOLOGY CONCEPTS—population ecology, ...

6: Populations POPULATION ECOLOGY Population ecology studies the dynamics of species’ populations and how these popu ...

Favorable environmental conditions (light, temperature, and nutrients) Unfavorable environmental conditions (insufficient ...

Figure 6.1 Fluctuations around the carrying capacity J-Curve A J-curve on a graph records the situation in whi ...

Figure 6.2 J-shaped population curve Figure 6.3 S-shaped population curve (logistics model) Predation Predation ...

known as K-strategists. Reproductive Strategies r-Strategists K-Strategists Mature rapidly Mature slowly Short lived L ...

not produce more children than they can support. In his 1798 work, Essay on Population, Malthus hypo ...

Figure 6.4 Survivorship curve Survivorship Curves Type Description I. Late Loss Reproduction occurs fairly early ...

III. Early Loss Typical of species that have great numbers of offspring and reproduce for most of their ...

The human population has had three surges in growth. These surges in population have been attribut ...

population growth rate during this time were famines, wars, and disease (density-dependent factors). 1300 C.E. ...

Earth’s species and we are not in charge of Earth; resources are limited and should not be wasted. We should encourage ...

Figure 6.6 Distribution of the last billion people on Earth Fertility Rates Replacement level fertility (RLF) ...

2.72 Mexico 2.31 United States 2.06 China 1.54 Russia 1.54 Japan 1.21 World average 2.59 The two main effects of ...

Figure 6.7 Worldwide total fertility rates Declines in fertility rates can be attributed to several factors: ■ ...

Immigration refers to the number of individuals that enter the population, while emigration refers to the number ...

The actual rate of population change can be determined by using the following formula: EXAMPLE The United State ...

Figure 6.8 Estimated human population growth from 200 B.C.E. to 2200 C.E. Growth Rates and Doubling Times The ...

Source: U.S. Census Bureau, International Data Base, December 2010 Update Figure 6.9 Yearly growth rate of ...