Summer School PHS Domain 2, Earth Science

32 terms by chfreeman 

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exponential growth

population has a constant birth rate through time and is never limited by food or disease

j curve

graph for exponential growth

decomposers

feeds on dead and decaying organisms.

producers

capture solar energy and take in materials and make food which is then passed on to the consumers.

habitat

place where an organism or a community of organisms lives

biotic factors

all living things

abiotic factors

nonliving conditions

trophic level

each level of consumption in a food chain

food chain

producer, primary consumer, secondary consumer, tertiary consumer, decomposer

herbivore

only eats plants

carnivore

only eats animals

omnivore

eats both animals and plants

scavenger

feeds on dead animals

carrying capacity

number of individuals who can be supported in a given area within natural resource limits

S curve

birth rate = death rate

energy pyramids

used to present the flow of energy through an ecosystem.

predator

animal that kills prey for food

symbiosis

close long-term interactions between different biological species

mutualism

both species benefit

commensalism

one species benefits, the other is unaffected

parasitism

one species benefits, the other is harmed

population

animals of the same species that live in the same place

community

organisms of different species living in the same location

ecosystem

all of the biotic and abiotic components in an area

tundra

a biome that consists of little plant life,experiences little rainfall and has permafrost

desert

a biome that is hot, dry, and experiences very little rainfall

deciduous forest

biome that is found in the southeast US-has four distinct seasons

taiga

biome that consists largely of evergreen trees, low temperatures and experiences moderate rainfall

grasslands

biome that is the habitat for large numbers of herbivores

tropical rainforest

hot, humid biome that experiences large amounts of rainfall

species

smallest level of the ecological system of organization

biosphere

largest level of the ecological system of organization

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