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Energy Budget
energy taken in from food vs the energy expended on various life functions
Torpor
a time of decreased metabolism & lower body temp. that may occur daily
Winter Sleep
occurs in larger animals. Large energy reserves sustain these animals during winter inactivity. Body temps drop.
Aestivation
period of inactivity in some animals that must withstand extended periods of dryness. Common in invertebrates, reptiles, and amphibians
Abiotic
all nonliving things
Hibernation
a time of decreased metabolism & lowered body temperature that may last for weeks or months
Biotic
living characteristics of a habitat.
Exponential Growth
the population grows exponentially rapidly. This form of growth does not last forever
Logistic Growth
population growth curve that assumes an S shape where it reflects rapid growth followed by a slow growth rate or no growth rate
Density-Independent Factors
actors influence a population regardless of how many are in the population
Herbivore
animals that feed on plants
Interspecific competition
is when two different species compete for resources
Coevolution
happens when ecologically related species exert a strong selective influence on the other
Niche
a species niche includes all of the animals attributes
Density-Dependent Factors
factors influence a population more severely when population is high
