Populations are composed of individuals of the _______________________ living in the same area. The maximum rate of reproduction for a population is its _______________________________________. A population allowed to reach its biotic potential would soon cover the earth. The growth of populations is regulated by the environment’s limiting factors such as _________________________________.
When a population establishes itself in a new area, it grows slowly at first. The population then enters an ________________________ phase of growth in which its number _____________________ at decreasing intervals. Exponential growth ceases when the ___________________________ of the environment is reached. The carrying capacity is determined by limiting factors that restrict population growth. Some limiting factors depend on the population’s density; some are independent of density.
Changes in populations are calculated by __________________________ the number of deaths & emigrants from the number of __________________ & __________________. Population crashes & explosions are dramatic changes in the size of populations.
The human population is currently in its exponential phase of growth. The number of humans now doubles about every _______ years. Providing for this growing population is one of the major problems facing the modern world.
IMPORTANT TERMS
POPULATION GROWTH
Biotic potential –
Lag phase –
Exponential Growth –
Exponential Phase –
J-Curve –
Stabilization Phase –
Carrying Capactiy –
S-Curve –
Limiting factors –
Population Density –
Density-Independent Factors –
Density –Dependent Factors –
Saw-Tooth Curve –
Birth Rate –
Death Rate –
Growth Rate -