exponential growth: Continuous increase or decrease in a population in which the rate of change is proportional to the number of individuals at any given time. age structure: The distribution of ...

Population growth of populations subject to Allee effects is reduced at low density. The originator and ... populations (Allee 1931). In modern biology, Allee effects are considered to have ...

We're in the midst of the Earth’s sixth mass extinction crisis. Harvard biologist E. O. Wilson estimated that 30,000 species per year (or three species per hour) are being driven to extinction.