Interactions between organisms and the environment
4 Factors that Change Population Size
1. birth (increase) 2. immigration (increase) 3. death (decrease) 4. emigration (decrease)
Acclimation
a change at the individual level in response to an environmental factor (turned on and off)
Carrying Capacity
the number of organisms that can be supported by an environment
2 Basic Patterns in Population Growth
1. EXPONENTIAL GROWTH 2. LOGISTIC GROWTH
Biomes
Different types of habitats found on land
Exponential Growth
conditions required: abundant resources
Logistic Growth
conditions required: battle for resources/ limited resources death
Behavioral adaptations
ex: desert mice that sleep during the day because its hot
Morphological adaptations
ex: small furs= less surface area/exposed to snow
Physiological adaptations
happen inside your cells
Population growth
higher birth rate than death rate
Population
members of the same species that interact through gene flow
Adaptation
natural selection, characteristics that are in DNA, gene control of some aspect of that organism (only changes over generation)
