Population basics
The number of individuals in a given area or volume
What is population density
The number of individuals in a given area or volume
What is population density
The average number of children a woman is expected to have
What is total fertility rate (TFR)
Type of survivorship curve where most individuals die late in life
What is type I
This country is the most populous in the world as of the 2020s
What is India? (or What is China?)
The maximum population size an environment can sustain indefinitely
What is carrying capacity
The S-shaped curve that represents limited growth
What is logistic growth
The percentage of a population that must be replaced to maintain size
What is replacement-level fertility
Type of species with many offspring and little parental care
what are r-selected species
This insect can lay hundreds of eggs in a lifetime and is a textbook example of an r-selected species.
What is a mosquito?
These factors, like disease ot competition, have greater impact as population density increases
What are density-dependant factors
A country with high infant mortality and low female literacy would most likely be in this stage of the demographic transition
What is Stage 2
A pyramid shaped age structure indicates this type of growth
What is rapid growth
How much percent is passed down each trophic level
what is 10%
This curve was famously used by Thomas Malthus to predict population collapse.
What is the exponential growth curve?
The growth pattern represented by a J-shaped curve
What is exponential growth
Factors like natural disasters that affect populations regardless
What are density-independent factors
The demographic transition stage with declining birth and death rates
What is stage 3 (industrial)
Type of survivorship curve with constant death rate
what is type II
The world population hit this milestone number around November 2022.
What is 8 billion?
The study population characteristics and trends
What is demography
The maximum reproductive rate under ideal conditions
What is biotic potential
The concept when birth and death rates are equal
What is zero population growth (ZPG)
These species mature slowly and have fewer offspring
what are K-selected species
This diagram looks like a pyramid but can actually take several shapes depending on a country’s growth.
What is an age structure diagram?