population has a constant birth rate through time and is never limited by food or disease
graph for exponential growth
feeds on dead and decaying organisms.
capture solar energy and take in materials and make food which is then passed on to the consumers.
place where an organism or a community of organisms lives
all living things
each level of consumption in a food chain
producer, primary consumer, secondary consumer, tertiary consumer, decomposer
only eats plants
only eats animals
eats both animals and plants
feeds on dead animals
number of individuals who can be supported in a given area within natural resource limits
birth rate = death rate
used to present the flow of energy through an ecosystem.
animal that kills prey for food
close long-term interactions between different biological species
both species benefit
one species benefits, the other is unaffected
one species benefits, the other is harmed
animals of the same species that live in the same place
organisms of different species living in the same location
all of the biotic and abiotic components in an area
a biome that consists of little plant life,experiences little rainfall and has permafrost
a biome that is hot, dry, and experiences very little rainfall
biome that is found in the southeast US-has four distinct seasons
biome that consists largely of evergreen trees, low temperatures and experiences moderate rainfall
biome that is the habitat for large numbers of herbivores
hot, humid biome that experiences large amounts of rainfall
smallest level of the ecological system of organization
largest level of the ecological system of organization
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